diff options
author | tradke <tradke@d60812e6-3970-4df4-986e-c251b06effeb> | 2003-07-09 16:04:43 +0000 |
---|---|---|
committer | tradke <tradke@d60812e6-3970-4df4-986e-c251b06effeb> | 2003-07-09 16:04:43 +0000 |
commit | 6d0154d89521ba27fec78ee4023f1a688b5954d0 (patch) | |
tree | 191498fc9440d0de2bd65f01640c06ed4e4c3fed /src/ReductionNorm4.c | |
parent | 16266c2af7fe606b142e3c8498b8bf690ce48cc3 (diff) |
Fix for the reduction of grid arrays which don't have any point on a specific
processor.
git-svn-id: http://svn.cactuscode.org/arrangements/CactusPUGH/PUGHReduce/trunk@42 d60812e6-3970-4df4-986e-c251b06effeb
Diffstat (limited to 'src/ReductionNorm4.c')
-rw-r--r-- | src/ReductionNorm4.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/ReductionNorm4.c b/src/ReductionNorm4.c index 1476eb3..8132aa2 100644 --- a/src/ReductionNorm4.c +++ b/src/ReductionNorm4.c @@ -29,6 +29,7 @@ static int ReductionNorm4 (const cGH *GH, int iterator[/* dim */], const int points_per_dim[/* dim */], int num_points, + int have_local_points, int num_inarrays, const int intypes[/* num_inarrays */], const void *const inarrays[/* num_inarrays */], @@ -210,6 +211,7 @@ static int ReductionNorm4 (const cGH *GH, int iterator[/* dim */], const int points_per_dim[/* dim */], int num_points, + int have_local_points, int num_inarrays, const int intypes[/* num_inarrays */], const void *const inarrays[/* num_inarrays */], @@ -343,8 +345,16 @@ static int ReductionNorm4 (const cGH *GH, { local_outvals = malloc (total_outvals * sizeof (CCTK_REAL)); - /* outvals[] contains now the local sum */ - memcpy (local_outvals, outvals, total_outvals * sizeof (CCTK_REAL)); + if (have_local_points) + { + /* outvals[] contains now the local sum */ + memcpy (local_outvals, outvals, total_outvals * sizeof (CCTK_REAL)); + } + else + { + /* initialize local values to zero */ + memset (local_outvals, 0, total_outvals * sizeof (CCTK_REAL)); + } if (proc < 0) { CACTUS_MPI_ERROR (MPI_Allreduce (local_outvals, outvals, total_outvals, |