Hi,
I am trying to get Mono 2.4 running on a SGI Altix 4700 (96-way Itanium 2
box) running SUSE Linux Enterprise Server 10. It compiles successfully
using default configuration settings however upon testing it fails at simple
locking (n threads incrementing a shared counter produces race conditions).
I have tried;
-> Changing "--with-tls" between both "__thread" and "pthread"
-> Changing CFLAGS, CCASFLAGS, CXXFLAGS and FFLAGS to exclude
optimizations (removed -O2)
-> Altering versions of glib (between glib-2.16.5 and glib-2.20.5) - there
is a gthread dependence but I am not sure how that impacts matters.
Unfortunately none of the above made any difference. Is anybody out there
running Mono on anything similar hardware wise (IA-64 at least)? Any ideas?
Any help would be greatly appreciated.
It should be noted that this all works fine on a 8-way AMD64 box with the
test program producing correct results (to exclude test program as a
possible problem).
Some more details:
Using: glib-2.20.5, libunwind-0.99, gcc version 4.1.2 20070115 (SUSE
Linux)
Test App "core" (C#) - n threads executing Worker() followed by join:
public static void Worker()
{
int steps = increments / n_threads;
for (int i = 0; i < steps; i++)
{
lock (shared_lock)
{
shared_counter++;
}
}
}
Test App results:
u...@host:~/code/tests> mono SharedCounter.exe 1000000 10
1000000 increments over 10 threads
Counter value: 999023
u...@host:~/code/tests> mono SharedCounter.exe 1000000 10
1000000 increments over 10 threads
Counter value: 999087
u...@host:~/code/tests> mono SharedCounter.exe 1000000 10
1000000 increments over 10 threads
Counter value: 999211
u...@host:~/code/tests> mono SharedCounter.exe 1000000 10
1000000 increments over 10 threads
Counter value: 999219
Please let me know if you need any additional information. Thanks in
advance,
Darryl
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