[Mono-dev] Mono 2.4 on IA-64 SGI Altix 4700

[Zoltan Varga]

Hi,

  This looks like a bug. File a bug report at bugzilla.novell.com and attach
the test case.

             Zoltan

On Fri, Oct 30, 2009 at 1:59 AM, d-a-z-z-a <darryl at cain.com.au> wrote:

>
> 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:
>
> user at host:~/code/tests> mono SharedCounter.exe 1000000 10
> 1000000 increments over 10 threads
> Counter value: 999023
>
> user at host:~/code/tests> mono SharedCounter.exe 1000000 10
> 1000000 increments over 10 threads
> Counter value: 999087
>
> user at host:~/code/tests> mono SharedCounter.exe 1000000 10
> 1000000 increments over 10 threads
> Counter value: 999211
>
> user at 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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> Sent from the Mono - Dev mailing list archive at Nabble.com.
>
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