Hi Avinash,
are you able to post a full code example that exhibit the deadlock and
the problem with X10_NTHREADS=2?
The problem with X10_NTHREADS=2 sounds like a race condition, but this
may be impossible to diagnose without the code.
Can you compile the same code with x10c++ to see if it also crashes with
no output under X10_NPLACES=2 ?
Cheers
Josh
On 20/10/11 05:53, Avinash Malik wrote:
> Hello,
>
> I am using X10 compiler svn revision r23082, which fixes the
> async at and at async problems. I still cannot get the async
> at(p){} code to work. It deadlocks. at(p) async{} works
> fine. Also, using a val before the async at(p){} works fine (the
> work around that Olivier) described before.
>
> Another point. When I set X10_NTHREADS to 2, which is the number
> of cores I got on my machine. The application somehow seems to
> loose data. For example, I have a facial recognition system with
> 12 images. When I have X10_NTHREADS=1, then all 12 images are
> recognised. But, when X10_THREADS=2, sometimes the system only
> processes 4 images, discarding the other 8, sometimes it
> processes only 6 images, etc.
>
> Finally, I have only a single place Place(0). But, I purposely
> set X10_NPLACES=2, just to see what happens. In this case the
> program crashes without giving out any output.
>
> I have compiled the X10 compiler without optimizations, I use
> the GML (global matrix library) compiled with optimization
> turned off and my own application (and streaming library that I
> have built using X10) itself is compiled without optimizations
> turned on.
>
> Help is appreciated.
>
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