tsl@mungunni.cs.mu.OZ.AU (Tim Leask) (08/21/90)
Has anyone been able to get EPT to work? Is it brain-damaged or is it me ?
I've have typed in the following code based on some from an early draft of
the Encore Parallel Threads Manual. I removed nearly everything to isolate
the problem.
#include <thread.h>
#include <stdio.h>
void startup();
void mult();
main(argc,argv)
int argc;
char **argv;
{
THREADgo(2,20 * 1024, startup, 0, 0, 2*1024,2);
}
void
startup()
{
}
When I run this program after linking with ept I get a 30 Meg process running!!
I did a size on the binary and found that the bss segment was
30 Meg in size.
Sometimes I get the following error message:
THREAD (error): THREADgo: fork failed, using -1 processors
Other times I get nothing.
The initial process never terminates and I end up having to kill it and
any children that it may have been able to fork off.
I've tried various values for nr_procs (1,2,3),
data_size (2 Meg, 200k 20k),
stacksize (20k,2k)
None of these changes affected the process size. It's always 30 Meg as are its
children.
We are running UMAX 4.3 on an Encore with 18 APC processors.
What is going wrong? Is there some sysparams that need to be set to
get the library to work.
Where can I get a working version of Threads for the Encore? (Assuming
ours is no good).
I was hoping to use threads in my honours project so any and all responses
gratefully received.
Thanks
Tim Leask
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| Tim Leask, Programmer and Honours Researcher |
| Department of Computer Science, Melbourne University |
| ACSnet: tsl@munnari.oz.au UUCP: {mcvax,ukc,ubc-cs}!munnari!tsl |
| CSNET: tsl%munnari.oz INTERNET: tsl%munnari.oz@uunet.uu.net |
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