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Hello all, I am not really sure that it`s a mpb related problem
or a scheme problem... Please let me know if you think I am positing to the
wrong mailing list. I have setup a simulation where I iterate for “kz”
and for “r” the radius of the defect of triangular lattice of
holes. The output is sent to a file at each step of the iteration. Strangely, my simulations are always aborted when they
reach 102528 lines in the file. This behaviour does not seem to be related to my
choice of kz or r. I have suspected that I was reaching some kind of limit
of file size (at that time that was around 13Mo). So I have removed a couple of
parameters to decrease it’s size by a factor of two, but the simulation
is aborted anyway at 6Mo of file size. In both case the limit is at 102528
lines. ======================================= I open my output-file with the following command: (define OutputFile (open-output-file “filename.txt”)) ….definition In the loop , I write to it at the end of each call
to the “run” command with : (display kz OutputFile) (display “\t” OutputFile) … (display “\n”) The file is closed when the loop is completed with: (close-output-port
OutputFile) I am not really sure of the cause of the problem… On one side that might be related to the file
handling (although I don’t see why). As a possible solution, I would like
to avoid keeping my output file open for all the duration of the simulation and
instead opening it and close it when it’s really needed. I could
try to open the file in “append” mode and close it within the loop
at each iteration. Unfortunately, I have not found the way to open the file without
using a “define”
command for the output port, which restricts the opening to the zone outside
the loop. If anyone could give a trick to do it, that will be
appreciated. Prior to send my results to a file, I was using the
standard approach to print my results to the standard output, redirect it to a
file and get the appropriate values from the grep command. I got the same
problem. The simulations were stopping at some point although I do not recall
if it was at after 102528 iterations. At that time, I was thinking that it was
related to the file size that was getting to big (>25Mo). It is why I
decided to send my results to a file. Getting the same problem, let me think that it could
be possible that I reach some kind of memory problem due to the fact I call 102528
times the run command with the same call to mpb. Should I flush the memory in
some when I do these repetitive calls to (run)? Thanks Stef
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