CLOSED Re: [gentoo-user] panic:: octave: magick/semaphore.c:525: [...] failed
On 07/29/2010 06:19 AM, pk wrote: On 2010-07-29 06:49, Valmor de Almeida wrote: Thanks for the feedback. I posted the same question on the octave users list but no answers. Maybe vacation time so most users are offline? I'm on vacation but still online... :-) If you know C you could check out the semaphore.c file to see what it looks like and how whatever function is used should be called... maybe it can give you some clue? Best regards Peter K For the record, the work around this problem was posted on the octave users list. It appears to me to be either initialization problem or race condition. The workaround that works for me is to read some file first fith imread, after that imwrite works fine. I.e.: junk1 = imread(some_file.png) im=ones(2); imwrite(im, myfile.png) Dmitri. -- Valmor
Re: [gentoo-user] panic:: octave: magick/semaphore.c:525: [...] failed
On 2010-07-29 06:49, Valmor de Almeida wrote: Thanks for the feedback. I posted the same question on the octave users list but no answers. Maybe vacation time so most users are offline? I'm on vacation but still online... :-) If you know C you could check out the semaphore.c file to see what it looks like and how whatever function is used should be called... maybe it can give you some clue? Best regards Peter K
Re: [gentoo-user] panic:: octave: magick/semaphore.c:525: [...] failed
On 2010-07-26 18:16, Valmor de Almeida wrote: - ./test.m octave: magick/semaphore.c:525: LockSemaphoreInfo: Assertion `semaphore_info != (SemaphoreInfo *) ((void *)0)' failed. panic: Aborted -- stopping myself... attempting to save variables to `octave-core'... save to `octave-core' complete Aborted Hi, I tested your code (and variations of it) and I get the same result as you. Googling seems to indicate that lots of other people are having similar problems with imwrite/imread function. The functions are not part of the octave package but is an add-on. However, from what I can see it may be a problem in the way octave make the graphicsmagick write-call (of course there may be a problem with graphicksmagick itself as well). Don't know enough to be of more help... Sorry! Best regards Peter K
Re: [gentoo-user] panic:: octave: magick/semaphore.c:525: [...] failed
pk wrote: [snip] Hi, I tested your code (and variations of it) and I get the same result as you. Googling seems to indicate that lots of other people are having similar problems with imwrite/imread function. The functions are not part of the octave package but is an add-on. However, from what I can see it may be a problem in the way octave make the graphicsmagick write-call (of course there may be a problem with graphicksmagick itself as well). Don't know enough to be of more help... Sorry! Best regards Peter K Thanks for the feedback. I posted the same question on the octave users list but no answers. Regards, -- Valmor
[gentoo-user] panic:: octave: magick/semaphore.c:525: [...] failed
Hello, The test code below for writing an image to a file crashes octave. Would anyone be able to help? I am using octave-3.2.4-r1 and graphicsmagick-1.3.12 Thanks, -- Valmor file test.m --- #! /usr/bin/octave -qf im = ones(2,2); im(2,1) = 0.5; im(1,2) = 0.5; imwrite(im,image.png); -- - ./test.m octave: magick/semaphore.c:525: LockSemaphoreInfo: Assertion `semaphore_info != (SemaphoreInfo *) ((void *)0)' failed. panic: Aborted -- stopping myself... attempting to save variables to `octave-core'... save to `octave-core' complete Aborted
