Having trouble with parallel Haskell

Simon Peyton-Jones simonpj at microsoft.com
Thu Jun 5 06:56:03 EDT 2008

| > The most substantial problem is that the threaded RTS in GHC 6.8.2 is
| > very crashy in the face of "par": about 90% of my runs fail with a
| > segfault or an assertion failure.  Simon Marlow mentioned that this bug
| > is fixed, but I've been unsuccessful in building a GHC 6.8.3 release
| > candidate snapshot so far, so I can't verify this.

There's a 6.8.3 release candidate you might be able to try.  GHC shouldn't crash, ever.  So everyone, do please file bug reports with test cases for parallel programs that crash.  (But probably not for 6.8.2!)


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