<span class="quotelev1"> Hi </span><br> <span class="quotelev1">I am using mpich2-1.0.3 to compiling our code. Our code is calling </span><br> <span class="quotelev1">MPI_WAITALL. We ran the case in intel-Dual core without any problem </span><br> <span class="quotelev1">and solution was fine. I tried to ran the code in intel quad-core. </span><br> <span class="quotelev1">Compilation using mpif90 is fine. I started running the executable </span><br> <span class="quotelev1">file, i got the following error. </span><br> <span class="quotelev1">----------------------------------------------------------------------</span><span class="quotelev1">--------------------------------- </span><br> <span class="quotelev1">Fatal error in MPI_Waitall: Invalid MPI_Request, error stack: </span><br> <span class="quotelev1">MPI_Waitall(241): MPI_Waitall(count=250, req_array=0x23e52e0, </span><br> <span
class="quotelev1">status_array=0x7fbfffe3a0) failed </span><br> <span class="quotelev1">MPI_Waitall(109): Invalid MPI_Request </span><br> <span class="quotelev1">----------------------------------------------------------------------</span><span class="quotelev1">------------------------------------------------- </span><br> <span class="quotelev1"> </span><br> <span class="quotelev1">So i removed all the lines where MPI-WAITALL is using. Again i </span><br> <span class="quotelev1">compiled to code using mpif90(mpich) and ran it. Now its running </span><br> <span class="quotelev1">without any problem. Can you please explain me what is happen here. </span><br> <span class="quotelev1"> </span><br> <span class="quotelev1">Thanks </span><br> <span class="quotelev1">Velan</span><p> 
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