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GIMP Image Size Limits

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GIMP Image Size Limits Kevin Myers 09 Jan 05:31
  GIMP Image Size Limits Fred Bazolo 09 Jan 05:58
  GIMP Image Size Limits Fred Bazolo 09 Jan 06:12
  GIMP Image Size Limits sam ende 09 Jan 10:25
   GIMP Image Size Limits Geoffrey 09 Jan 14:59
  GIMP Image Size Limits Sven Neumann 09 Jan 12:22
GIMP Image Size Limits Kevin Myers 09 Jan 06:11
  GIMP Image Size Limits Fred Bazolo 09 Jan 06:22
GIMP Image Size Limits Kevin Myers 09 Jan 06:26
  GIMP Image Size Limits Fred Bazolo 09 Jan 07:30
GIMP Image Size Limits Kevin Myers 09 Jan 07:30
  GIMP Image Size Limits Fred Bazolo 09 Jan 07:36
GIMP Image Size Limits Kevin Myers 09 Jan 07:35
GIMP Image Size Limits Kevin Myers 09 Jan 08:22
GIMP Image Size Limits Kevin Myers 09 Jan 15:36
  GIMP Image Size Limits Sven Neumann 10 Jan 11:46
GIMP Image Size Limits DzZero 09 Jan 18:35
  GIMP Image Size Limits Sven Neumann 10 Jan 11:54
GIMP Image Size Limits Kevin Myers 10 Jan 12:13
  GIMP Image Size Limits Sven Neumann 10 Jan 12:31
GIMP Image Size Limits Kevin Myers 10 Jan 12:45
  GIMP Image Size Limits Sven Neumann 10 Jan 16:47
Kevin Myers
2003-01-09 05:31:00 UTC (over 18 years ago)

GIMP Image Size Limits

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes per pixel (RGB, transparency, ?), even though all of that isn't really needed for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers in addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Fred Bazolo
2003-01-09 05:58:21 UTC (over 18 years ago)

GIMP Image Size Limits

I would be glad to try some of your files on my system. Shoot 'em over.

I have tried and used Red Hat (various) and Mandrake. I like them both, but the one I like best is SUSE. I've used 7.3 and 8.0 (currently). I'm nobodies computer guru, so if I can use these distros anybody can.

I chose SUSE over the others because all my "stuff" ( hardware ) just seemed to work better with that distro. I spent less time diddling with my system, more time working.

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes per pixel (RGB, transparency, ?), even though all of that isn't really needed for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers in addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Kevin Myers
2003-01-09 06:11:44 UTC (over 18 years ago)

GIMP Image Size Limits

Sorry Fred and all, my apologies, 400KB was a serious typo. That should have read 400MB!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:12 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all that big;
actually, that sounds pretty small. Also, I'm not very technical so bear with
me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes

per

pixel (RGB, transparency, ?), even though all of that isn't really needed for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers

in

addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Fred Bazolo
2003-01-09 06:12:00 UTC (over 18 years ago)

GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all that big; actually, that sounds pretty small. Also, I'm not very technical so bear with me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes per pixel (RGB, transparency, ?), even though all of that isn't really needed for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers in addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Fred Bazolo
2003-01-09 06:22:21 UTC (over 18 years ago)

GIMP Image Size Limits

Whew! That would be a test of my system!

Like I mentioned earlier, the largest files I ever tried to work with were about 100 MB, and although it worked it was too annoying to bother with.

But it would be fun to try a 400 mb file. I could just set the preferences parameters really high, close down everything else and see what happens.

It will take a few minutes just to download a 400 mb file!

On Thursday 09 January 2003 00:11, Kevin Myers wrote:

Sorry Fred and all, my apologies, 400KB was a serious typo. That should have read 400MB!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:12 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all that big;
actually, that sounds pretty small. Also, I'm not very technical so bear with
me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes

per

pixel (RGB, transparency, ?), even though all of that isn't really needed for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers

in

addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Kevin Myers
2003-01-09 06:26:27 UTC (over 18 years ago)

GIMP Image Size Limits

Hi Fred -

Fortunately, it isn't actually necessary to use a 400+MB file to test for the problem. I am uploading a 500M pixel file to an ftp site that I will point you to shortly. This file is 1 bit per pixel and using group 4 compression is only about 6MB in size. Hopefully that will download a lot faster, and it will still trigger the 2GB pixel cache limit if it exists (500M pixels * 5 bytes per pixel = 2.5GB).

Thanks for your help!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:22 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

Whew! That would be a test of my system!

Like I mentioned earlier, the largest files I ever tried to work with were about 100 MB, and although it worked it was too annoying to bother with.

But it would be fun to try a 400 mb file. I could just set the preferences parameters really high, close down everything else and see what happens.

It will take a few minutes just to download a 400 mb file!

On Thursday 09 January 2003 00:11, Kevin Myers wrote:

Sorry Fred and all, my apologies, 400KB was a serious typo. That should have read 400MB!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:12 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all that big;
actually, that sounds pretty small. Also, I'm not very technical so bear with
me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes

per

pixel (RGB, transparency, ?), even though all of that isn't really

needed

for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers

in

addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Fred Bazolo
2003-01-09 07:30:09 UTC (over 18 years ago)

GIMP Image Size Limits

Kevin,

I may be able to save you the trouble.

While I was waiting, I went ahead and just tried to make some 400 MB tiff files. I got as high as 273MB and my system didn't like it, but it did it.

Above that, the GIMP just died and went away - literally! I set the preferences so as to allow as much free memory as possible but that's the best I'm able to do. So I wonder, is there some sort of ~300 MB limit with tiff files, or is it just my system, or the way I had things set up. Don't know.

I was using color tiffs if that is useful.

On Thursday 09 January 2003 00:26, Kevin Myers wrote:

Hi Fred -

Fortunately, it isn't actually necessary to use a 400+MB file to test for the problem. I am uploading a 500M pixel file to an ftp site that I will point you to shortly. This file is 1 bit per pixel and using group 4 compression is only about 6MB in size. Hopefully that will download a lot faster, and it will still trigger the 2GB pixel cache limit if it exists (500M pixels * 5 bytes per pixel = 2.5GB).

Thanks for your help!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:22 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

Whew! That would be a test of my system!

Like I mentioned earlier, the largest files I ever tried to work with were about 100 MB, and although it worked it was too annoying to bother with.

But it would be fun to try a 400 mb file. I could just set the preferences parameters really high, close down everything else and see what happens.

It will take a few minutes just to download a 400 mb file!

On Thursday 09 January 2003 00:11, Kevin Myers wrote:

Sorry Fred and all, my apologies, 400KB was a serious typo. That should have read 400MB!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:12 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all that big;
actually, that sounds pretty small. Also, I'm not very technical so bear with
me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes

per

pixel (RGB, transparency, ?), even though all of that isn't really

needed

for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers

in

addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Kevin Myers
2003-01-09 07:30:36 UTC (over 18 years ago)

GIMP Image Size Limits

Hi Fred -

Please don't wait around for me to upload the test image that I mentioned previously. In attempting to get this ready for you, I have encountered some unexpected behavior that I am presently evaluating. I am able to open and work with larger files than I experienced previously. Something must have changed on my system, but I have no idea what it could be. Suffice it to say at the moment that it doesn't look like the GIMP has a memory limit that affects my usage under Windows after all! I'll get back to you and the list later with more details once I'm certain that I can believe what seems to be happening. Thanks once again for offering to help.

Regards, Kevin M.

----- Original Message ----- From: "Kevin Myers"
To:
Cc: "gimp users" ; "gimpwin users"
; "gimpwin developers"

Sent: Wednesday, January 08, 2003 11:11 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

Sorry Fred and all, my apologies, 400KB was a serious typo. That should have read 400MB!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:12 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all that big;
actually, that sounds pretty small. Also, I'm not very technical so bear with
me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes

per

pixel (RGB, transparency, ?), even though all of that isn't really

needed

for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my

poor

porting skills and the apparant lack of interest of most gimp developers

in

addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like

to

volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Kevin Myers
2003-01-09 07:35:41 UTC (over 18 years ago)

GIMP Image Size Limits

Hi Fred -

Thanks for the info. Just encountered some rather surprising results on my own system, and sent you a separate note regarding that. Your results are similar to what I experienced previously on my system, but at around 400MB instead of 273MB. FWIW, I have 1.5GB of RAM on my Win 2K based system. Now I am even more confused! I'll do some more testing and let you know what I figure out...

Thanks again,
s/KAM

----- Original Message ----- From: "Fred Bazolo"
To:
Sent: Thursday, January 09, 2003 12:30 AM Subject: Re: [Gimp-user] GIMP Image Size Limits

Kevin,

I may be able to save you the trouble.

While I was waiting, I went ahead and just tried to make some 400 MB tiff files. I got as high as 273MB and my system didn't like it, but it did it.

Above that, the GIMP just died and went away - literally! I set the preferences so as to allow as much free memory as possible but that's the best I'm able to do. So I wonder, is there some sort of ~300 MB limit with tiff files, or is it just my system, or the way I had things set up. Don't know.

I was using color tiffs if that is useful.

On Thursday 09 January 2003 00:26, Kevin Myers wrote:

Hi Fred -

Fortunately, it isn't actually necessary to use a 400+MB file to test for the problem. I am uploading a 500M pixel file to an ftp site that I will point you to shortly. This file is 1 bit per pixel and using group 4 compression is only about 6MB in size. Hopefully that will download a lot faster, and it will still trigger the 2GB pixel cache limit if it exists (500M pixels * 5 bytes per pixel = 2.5GB).

Thanks for your help!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:22 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

Whew! That would be a test of my system!

Like I mentioned earlier, the largest files I ever tried to work with were about 100 MB, and although it worked it was too annoying to bother with.

But it would be fun to try a 400 mb file. I could just set the preferences parameters really high, close down everything else and see what happens.

It will take a few minutes just to download a 400 mb file!

On Thursday 09 January 2003 00:11, Kevin Myers wrote:

Sorry Fred and all, my apologies, 400KB was a serious typo. That should have read 400MB!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:12 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all that big;
actually, that sounds pretty small. Also, I'm not very technical so bear with
me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel

buffer

seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5

bytes

per

pixel (RGB, transparency, ?), even though all of that isn't really

needed

for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with

that.

However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers

in

addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install,

learn,

and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Fred Bazolo
2003-01-09 07:36:28 UTC (over 18 years ago)

GIMP Image Size Limits

Have fun!

On Thursday 09 January 2003 01:30, Kevin Myers wrote:

Hi Fred -

Please don't wait around for me to upload the test image that I mentioned previously. In attempting to get this ready for you, I have encountered some unexpected behavior that I am presently evaluating. I am able to open and work with larger files than I experienced previously. Something must have changed on my system, but I have no idea what it could be. Suffice it to say at the moment that it doesn't look like the GIMP has a memory limit that affects my usage under Windows after all! I'll get back to you and the list later with more details once I'm certain that I can believe what seems to be happening. Thanks once again for offering to help.

Regards, Kevin M.

----- Original Message ----- From: "Kevin Myers"
To:
Cc: "gimp users" ; "gimpwin users"
; "gimpwin developers"

Sent: Wednesday, January 08, 2003 11:11 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

Sorry Fred and all, my apologies, 400KB was a serious typo. That should have read 400MB!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:12 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all that big;
actually, that sounds pretty small. Also, I'm not very technical so bear with
me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes

per

pixel (RGB, transparency, ?), even though all of that isn't really

needed

for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my

poor

porting skills and the apparant lack of interest of most gimp developers

in

addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like

to

volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Kevin Myers
2003-01-09 08:22:37 UTC (over 18 years ago)

GIMP Image Size Limits

Hmmm,

Ok, here is what seems to be happening: When the size of the vertical axis (I didn't test horizontal) exceeds somwhere around 2250 inches, the gimp dies or locks up. It doesn't seem to matter what the size of the file is, and it doesn't matter how many pixels there are.

Using File -> New, both 1024 x 162000 pixels at 72 dpi and 1024 x 450000 pixels at 200 dpi work fine, while both 1024 x 163000 pixels at 72 dpi and 1024 x 453000 pixels at 200 dpi fail. I have no idea exactly what could be causing this, but obviously an overflow or overrun of some type seems likely.

Any gimp developers out there care to take a look at this? I'm running 1.2.4 under Win 2K. Fred was running under Suse Linux 8.0 I believe.

Thanks in advance, s/KAM

----- Original Message ----- From: "Kevin Myers"
To:
Cc: "gimp users" ; "gimpwin users"

Sent: Thursday, January 09, 2003 12:35 AM Subject: Re: [Gimp-user] GIMP Image Size Limits

Hi Fred -

Thanks for the info. Just encountered some rather surprising results on

my

own system, and sent you a separate note regarding that. Your results are similar to what I experienced previously on my system, but at around 400MB instead of 273MB. FWIW, I have 1.5GB of RAM on my Win 2K based system.

Now

I am even more confused! I'll do some more testing and let you know what

I

figure out...

Thanks again, s/KAM

----- Original Message ----- From: "Fred Bazolo"
To:
Sent: Thursday, January 09, 2003 12:30 AM Subject: Re: [Gimp-user] GIMP Image Size Limits

Kevin,

I may be able to save you the trouble.

While I was waiting, I went ahead and just tried to make some 400 MB tiff files. I got as high as 273MB and my system didn't like it, but it did it.

Above that, the GIMP just died and went away - literally! I set the preferences so as to allow as much free memory as possible but that's the best I'm able to do. So I wonder, is there some sort of ~300 MB limit with tiff files, or is it just my system, or the way I had things set up. Don't know.

I was using color tiffs if that is useful.

On Thursday 09 January 2003 00:26, Kevin Myers wrote:

Hi Fred -

Fortunately, it isn't actually necessary to use a 400+MB file to test

for

the problem. I am uploading a 500M pixel file to an ftp site that I

will

point you to shortly. This file is 1 bit per pixel and using group 4 compression is only about 6MB in size. Hopefully that will download a

lot

faster, and it will still trigger the 2GB pixel cache limit if it exists (500M pixels * 5 bytes per pixel = 2.5GB).

Thanks for your help!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:22 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

Whew! That would be a test of my system!

Like I mentioned earlier, the largest files I ever tried to work with

were

about 100 MB, and although it worked it was too annoying to bother with.

But it would be fun to try a 400 mb file. I could just set the

preferences

parameters really high, close down everything else and see what happens.

It will take a few minutes just to download a 400 mb file!

On Thursday 09 January 2003 00:11, Kevin Myers wrote:

Sorry Fred and all, my apologies, 400KB was a serious typo. That

should

have read 400MB!

s/KAM

----- Original Message ----- From: "Fred Bazolo"
To: "gimp users"
Sent: Wednesday, January 08, 2003 11:12 PM Subject: Re: [Gimp-user] GIMP Image Size Limits

I am curious about your file sizes though: 400 KB doesn't sound all

that

big;
actually, that sounds pretty small. Also, I'm not very technical so

bear

with
me, but isn't 5 times 400 KB about 2.0 MB? What am I missing here?

On Wednesday 08 January 2003 23:31, Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel

buffer

seems to hit a 2GB file size limit when my gray scale TIFF image

files

excede roughly 400KB in size. I'm guessing the buffer requires 5

bytes

per

pixel (RGB, transparency, ?), even though all of that isn't really

needed

for my images.

I need to work with these images absolutely ASAP. Because all of

the

machines involved are running Windoze, I was hoping to stick with

that.

However, it's starting to look like that is a hopeless cause given

my

poor porting skills and the apparant lack of interest of most gimp developers

in

addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two

related

questions:

1. Can anyone out there positively confirm that running the GIMP

under

a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install,

learn,

and use for unsophisticated users with primarily Windblows

experience?

Thanks in advance for any help.

s/KAM

sam ende
2003-01-09 10:25:05 UTC (over 18 years ago)

GIMP Image Size Limits

On Thursday 09 January 2003 04:31, Kevin Myers wrote:

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

mandrake, is a bit bloated but easy, self installs pretty much like windows, so it only take about an hour or so to get up and running. you do need to know exactly what type of monitor you have for setting up though and hopefully you don't have a hsp modem :)

sammi

Sven Neumann
2003-01-09 12:22:09 UTC (over 18 years ago)

GIMP Image Size Limits

Hi,

"Kevin Myers" writes:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes per pixel (RGB, transparency, ?), even though all of that isn't really needed for my images.

did you increase the tile cache size? Otherwise you are not using much of your RAM and almost all the tile data ends up in the swap file which is indeed limited to 2GB (see below).

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

I can definitely tell you that GIMP-1.2 as well as GIMP-1.3 up to version 1.3.11 have the same problem on whatever platform you use them. See http://bugzilla.gnome.org/show_bug.cgi?id=74478

I have finally fixed this in CVS last weekend and successfully tested with the swap files growing to almost 5 GB. The fix will in the 1.3.12 release. If you need it now, you will have to use GIMP from CVS. You should however note that this is an unstable development tree and there certainly are bugs in GIMP-1.3.

Salut, Sven

Geoffrey
2003-01-09 14:59:42 UTC (over 18 years ago)

GIMP Image Size Limits

sam ende wrote:

On Thursday 09 January 2003 04:31, Kevin Myers wrote:

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

mandrake, is a bit bloated but easy, self installs pretty much like windows, so it only take about an hour or so to get up and running. you do need to know exactly what type of monitor you have for setting up though and hopefully you don't have a hsp modem :)

This is getting a bit off topic, but as long as we're talking distros...

SuSE, Mandrake and Red Hat permit a pretty much unattended install. Each will permit you to select a standard install and move forward. You will still have to answer questions regarding your hardware, such as monitor, mouse and possibly video card, but my latest efforts with both Red Hat and Mandrake, have found that both identified these devices properly and all I had to do was confirm.

I've got Mandrake 9.0 installed on 4 machines, and all I needed to know about the monitor was the make and model, which is no more then required for a windows install. Each monitor was automatically detected properly, so all I had to do was verify that was correct and in all cases it was. These monitors range from a 20" Viewsonic to couple of relatively old 14" (Dell, Panasonic, Packard Bell).

As far as bloated, Mandrake will permit you to choose what you install from various levels:

workstation vs. server specific type of workstation (development env., internet client..) install by individual packages.

Our local LUG had a demonstration of SuSE 8.0 install and it went flawless, on a machine for someone who had never used Linux. He was watching DVD movies by the end of the presentation.

I would say you are safe going with Red Hat, Mandrake or SuSE. Of late I've been running Mandrake, although I have two machines on Red Hat and one on SuSE. I also just purchased SuSE 8.1 and plan to check it out.

Finally, both my 11 year daughter and my mother-in-law are using Linux for their primary computing solution. My daughter installed her own Red Hat, but I was tier I support during this process. :)

Kevin Myers
2003-01-09 15:36:19 UTC (over 18 years ago)

GIMP Image Size Limits

Hi Sven,

Thanks for your reply. My tile cache size is set to 1GB (I have 1.5GB of RAM), which should theoretically help based on your comments. Also, upon further testing I have found that the problem I am encountering seems to be related to the physical dimensions of the image, rather than the file size or pixel count. For example, the GIMP is failing when the height of the image exceeds about 187.5 feet, regardless of whether using 72 dpi or 200 dpi.

I would be very willing to try the 1.3x source track. Unfortunately, I am limited to running under Windows at the moment, and my understanding is that 1.3x has not yet been ported to Windows, and that porting would be far too difficult for my amateur level porting skills.

Thanks again for your comments.

Regards, s/KAM

----- Original Message ----- From: "Sven Neumann"
To: "Kevin Myers"
Cc: "gimp users" ; "gimp developers" ; "gimpwin developers"

Sent: Thursday, January 09, 2003 5:22 AM Subject: Re: [Gimp-developer] GIMP Image Size Limits

Hi,

"Kevin Myers" writes:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes per pixel (RGB, transparency, ?), even though all of that isn't really needed for my images.

did you increase the tile cache size? Otherwise you are not using much of your RAM and almost all the tile data ends up in the swap file which is indeed limited to 2GB (see below).

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

I can definitely tell you that GIMP-1.2 as well as GIMP-1.3 up to version 1.3.11 have the same problem on whatever platform you use them. See http://bugzilla.gnome.org/show_bug.cgi?id=74478

I have finally fixed this in CVS last weekend and successfully tested with the swap files growing to almost 5 GB. The fix will in the 1.3.12 release. If you need it now, you will have to use GIMP from CVS. You should however note that this is an unstable development tree and there certainly are bugs in GIMP-1.3.

Salut, Sven

DzZero
2003-01-09 18:35:06 UTC (over 18 years ago)

GIMP Image Size Limits

Kevin Myers wrote:

Under Windows I am running into a problem where the GIMP's pixel buffer seems to hit a 2GB file size limit when my gray scale TIFF image files excede roughly 400KB in size. I'm guessing the buffer requires 5 bytes per pixel (RGB, transparency, ?), even though all of that isn't really needed for my images.

I need to work with these images absolutely ASAP. Because all of the machines involved are running Windoze, I was hoping to stick with that. However, it's starting to look like that is a hopeless cause given my poor porting skills and the apparant lack of interest of most gimp developers in addressing this problem under Windoze (at least in the near term).

So, I'm starting to consider using Linux instead, and have two related questions:

1. Can anyone out there positively confirm that running the GIMP under a fairly recent version of Linux would avoid any inherent 2GB pixel buffer size limit? I can provide some images for testing if anyone would like to volunteer...

2. Would anyone out there care to suggest a readily available commercial Linux distribution that is extremely easy to install, learn, and use for unsophisticated users with primarily Windblows experience?

Thanks in advance for any help.

s/KAM

Sven Neumann
2003-01-10 11:46:01 UTC (over 18 years ago)

GIMP Image Size Limits

Hi,

"Kevin Myers" writes:

Thanks for your reply. My tile cache size is set to 1GB (I have 1.5GB of RAM), which should theoretically help based on your comments. Also, upon further testing I have found that the problem I am encountering seems to be related to the physical dimensions of the image, rather than the file size or pixel count. For example, the GIMP is failing when the height of the image exceeds about 187.5 feet, regardless of whether using 72 dpi or 200 dpi.

are you saying 188 _feet_ ? That would make about 162000 pixels of image height. How wide are these images? If I'd assume the same width, a single RGB layer would have more than 75GB of image data. Your operating system is not even able to address the amount of virtual memory you'd need to work with such a beast.

I would be very willing to try the 1.3x source track. Unfortunately, I am limited to running under Windows at the moment, and my understanding is that 1.3x has not yet been ported to Windows, and that porting would be far too difficult for my amateur level porting skills.

this is not true; actually the situation is the other way around. While GIMP-1.2 needed real porting work, all the libraries required by GIMP-1.3 now officially support the Win32 platform and it shouldn't be too difficult to get the GIMP-1.3 source compiled on Windows.

Salut, Sven

Sven Neumann
2003-01-10 11:54:18 UTC (over 18 years ago)

GIMP Image Size Limits

Hi,

DzZero writes:

I am not sure if it is related at all but GIMP (as much as I hate to admit it) has some severe memory issues with large files. Or something gimp uses really I dont know.

if you have such problems, you should report them using Bugzilla (http://bugzilla.gnome.org/).

I regularly deal with 400-800MB images and gimp just chokes on the big ones. 400-500 I can normally work with for a period of time but it will ultimately choke. And yes we have the hardware to back it up. 1.5-2GB of ram and 1GB of swap and using at most 1 undo level. These are normally greyscale (8bit images). On occasion the larger files (800MB range) are color. I have also tweaked the tile cache size in all forms. Sometimes setting it big works sometimes small. Seems to be no ryme or reason as to why.

could you have a look at the size of the swap file when this happens? If it has grown to about 2GB, you are seeing bug #74478.

I have noticed issues related to clipping as well. Under this situation using a small tile cache seems to work most of the time. I can have the same memory available. Open a 100MB image. Import a path. Clip to the path using copy and repaste that into a new image. At that point I can not save. If I attempt to GIMP again chokes.

please report to Bugzilla.

I would submit an strace of this but the fact is if I do so the strace alone is going to be MBs of info. Does anyone really want to rumage through it?

straces are rarely useful to debug an application like The GIMP. I suspect that when you say 'choke', you are talking about a segmentation fault. It would be useful to get a stack trace from such a crash. Please don't confuse strace with stack trace, these are two different things. You can get a stack-trace from GIMP by using the command-line option '--enable-stack-trace alyway'. I doubt however that this will work on Windows due to the lack of gdb.

Salut, Sven

Kevin Myers
2003-01-10 12:13:31 UTC (over 18 years ago)

GIMP Image Size Limits

Hi Sven -

My images are extremely long and relatively narrow, not anywhere near square. A typical image size would be approximately 200K pixels in length (height), by only 2K pixels in length, for a total image size of about 400M pixels. I have some images over 600M pixels, while others are somewhat smaller.

Yes, some of these images exceed 200ft in length. You may be wondering what they could be: images of well logs for oil and gas wells. These are essentially strip chart (graphical) recordings of various physical properties taken over the length of the borehole. They are rather drastically scaled down already (typically 1 inch represents somewhere between 20 to 100 feet) in the vertical dimension, and detail is important, so further scale reduction is NOT practical. It is also impractical for other reasons that are too complex to get into here to split the images up into smaller sections.

Bottom line: Again, I must state that the problem I am encountering is NOT related to the pixel count or file size! It occurs when the number of pixels on ONE axis multiplied by the resolution exceeds approximately 187.5 feet in length.

Thanks for your comments re GIMP 1.3.x. Your positive impressions are somewhat surprising to me, since comments from Tor Lilqvist (the primary porter of GIMP 1.2.x to Windows), led me to believe that porting 1.3.x to Windows was going to be very difficult. Something to do with library interdependencies and lack of related tools under Windows if I remember correctly. Since Tor's porting skills are far beyond my own, and he's been involved with porting the GIMP for quite a while now, I tend to respect his opinions. However, anyone can occasionally miss something, especially if they are too busy with other things. Do you know anywhere I could find some instructions for installing GIMP 1.3.x under Windows?

s/KAM

----- Original Message ----- From: "Sven Neumann"
To: "Kevin Myers"
Cc: "gimp users" ; "gimp developers"

Sent: Friday, January 10, 2003 4:46 AM Subject: Re: [Gimp-developer] GIMP Image Size Limits

Hi,

"Kevin Myers" writes:

Thanks for your reply. My tile cache size is set to 1GB (I have 1.5GB of RAM), which should theoretically help based on your comments. Also, upon further testing I have found that the problem I am encountering seems to be related to the physical dimensions of the image, rather than the file size or pixel count. For example, the GIMP is failing when the height of the image exceeds about 187.5 feet, regardless of whether using 72 dpi or 200 dpi.

are you saying 188 _feet_ ? That would make about 162000 pixels of image height. How wide are these images? If I'd assume the same width, a single RGB layer would have more than 75GB of image data. Your operating system is not even able to address the amount of virtual memory you'd need to work with such a beast.

I would be very willing to try the 1.3x source track. Unfortunately, I am limited to running under Windows at the moment, and my understanding is that 1.3x has not yet been ported to Windows, and that porting would be far too difficult for my amateur level porting skills.

this is not true; actually the situation is the other way around. While GIMP-1.2 needed real porting work, all the libraries required by GIMP-1.3 now officially support the Win32 platform and it shouldn't be too difficult to get the GIMP-1.3 source compiled on Windows.

Salut, Sven

Sven Neumann
2003-01-10 12:31:33 UTC (over 18 years ago)

GIMP Image Size Limits

Hi,

"Kevin Myers" writes:

My images are extremely long and relatively narrow, not anywhere near square. A typical image size would be approximately 200K pixels in length (height), by only 2K pixels in length, for a total image size of about 400M pixels. I have some images over 600M pixels, while others are somewhat smaller.

Yes, some of these images exceed 200ft in length. You may be wondering what they could be: images of well logs for oil and gas wells. These are essentially strip chart (graphical) recordings of various physical properties taken over the length of the borehole. They are rather drastically scaled down already (typically 1 inch represents somewhere between 20 to 100 feet) in the vertical dimension, and detail is important, so further scale reduction is NOT practical. It is also impractical for other reasons that are too complex to get into here to split the images up into smaller sections.

Bottom line: Again, I must state that the problem I am encountering is NOT related to the pixel count or file size! It occurs when the number of pixels on ONE axis multiplied by the resolution exceeds approximately 187.5 feet in length.

please file a bug-report with all the information that might be useful.

Thanks for your comments re GIMP 1.3.x. Your positive impressions are somewhat surprising to me, since comments from Tor Lilqvist (the primary porter of GIMP 1.2.x to Windows), led me to believe that porting 1.3.x to Windows was going to be very difficult. Something to do with library interdependencies and lack of related tools under Windows if I remember correctly. Since Tor's porting skills are far beyond my own, and he's been involved with porting the GIMP for quite a while now, I tend to respect his opinions. However, anyone can occasionally miss something, especially if they are too busy with other things. Do you know anywhere I could find some instructions for installing GIMP 1.3.x under Windows?

obviously Tor and Hans have some problems with the way we reorganized the code. I'm sure however that this can be solved. Due to the much improved abstraction layers in GLib-2.x, the GIMP-1.3 source tree is a lot more portable and should compile out-of-the-box provided you get the build system setup correctly. But then, I've never tried it myself, so you should probably ignore me.

Salut, Sven

Kevin Myers
2003-01-10 12:45:00 UTC (over 18 years ago)

GIMP Image Size Limits

----- Original Message -----
From: "Sven Neumann"
To: "Kevin Myers"
Cc: "gimp users" ; "gimp developers"

Sent: Friday, January 10, 2003 5:31 AM Subject: Re: [Gimp-developer] GIMP Image Size Limits

please file a bug-report with all the information that might be useful.

Will do, as soon as I can get a few fires put out and find a few spare minutes in the day!

Regards,
Kevin M.

Sven Neumann
2003-01-10 16:47:59 UTC (over 18 years ago)

GIMP Image Size Limits

Hi,

just for your information: The problem is being discussed further in

http://bugzilla.gnome.org/show_bug.cgi?id=103030

and has been fixed in CVS in the meantime.

Salut, Sven