GIMP Version: 1.5.7
Operating System: Linux
GIMP Experience: Beginner Level

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We use gmic with dcraw like this :

dcraw -c -D -4 Img0062.nef | gmic -.pgm -output Img0062.png

All it's OK since we only launch one at a time this kind of command. If we laucnh two command like this, gmic block at

[gmic]-0./ Start G'MIC parser.
[gmic]-0./ Input file '-.pgm' at position [0]

We have to reboot ta have gmic run again...

To you have any idea of the problem and how to solve it without rebooting ?

Thanks

It's seem that it's dcraw that bock and do not write anythong over the pipe...

Any idea about dcraw ?

Maybe you should try to write the output of dcraw to a file instead.
No idea why dcraw blocks by the way !

I did it

dcraw -c -D -4 Img0062.nef > Img0062.pgm

On machine B, it's OK, on machine A where I launch dcraw at the same time, it's impossible... The command block and do nothing. The only way is to reboot...

It's clear that's a dcraw problem and not a gmic one.

If a launch with strace, it block on

open("/data/calcul/.badpixels", O_RDONLY

Here /data is an NFS mount...

If I just do

touch .badpixels

It's OK... no block anymore... I will send an email to the dcraw author.

If you are under the folder /data/calcul/toto/titi

dcraw try to open /data/calcul/toto/titi/.badpixels, if not /data/calcul/toto/.badpixels, if not /data/calcul/.badpixels, if not /data/.badpixels, if not /.badpixels

Here, /data/calcul/toto is automount with autofs. dcraw block only if we have launch it two time in parallel, never in sequence. I think it's a bug with autofs on pseudo folder... very strange.

just do

touch .badpixels

in current folder to have a solution