Hi, I got the following problem executing my program: >mpirun -np 52 truth.exe +RTS -H128m -M128m -RTS ... >Heap exhausted; >Current maximum heap size is 67108864 bytes; >use `+RTS -M<size>' to increase it. Although I increased manually the Heap-size, this option seems to be ignored. I compiled the code with ghc-4.06 and the option "-optCrts-M128m" under Linux. Does anyone know what to do to increase the Heap-size? cheers Thomas