[Haskell-cafe] Strange parallel behaviour with Ubuntu Karmic / GHC 6.10.4

Neil Brown nccb2 at kent.ac.uk
Sun Nov 15 16:49:11 EST 2009

Michael Lesniak wrote:
> Hello,
> I'm currently developing some applications with explicit threading
> using forkIO and have strange behaviour on my freshly installed Ubuntu
> Karmic 9.10 (Kernel 2.6.31-14 SMP).
> Setup:
> Machine A: Quadcore, Ubuntu 9.04, Kernel  2.6.28-13 SMP
> Machine B: AMD Opteron 875, 8 cores,  2.6.18-164 SMP- (some redhat)
> Machine C: Dual-Core, Ubuntu 9.10, Kernel 2.6.31-14 SMP
> Compiler on all machines: ghc 6.10.4 (downloaded from GHCs official website)

I have a dual-core Ubuntu 9.10 machine (running whatever GHC comes with 
the distro -- 6.10.x), so if you put your test code somewhere that I can 
get at, I can run it and see if I get the same effect.



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