id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc
622	Intel/ANL MPI test suite release	Brian Smith <smithbr@…>	balaji	"

{{{

Hi guys, just picking off some failures in the IntelANL MPI test suite
(2006) against MPICH2 1.1. It appears that all the failures are MPI 2.1 vs
MPI 2.0 changes.

However (and this might be a forum question, but I figured I'd ask here
anyway), it appears there might either be an ambiguity in MPI_Cart_map and
MPI_Graph_create, or the MPICH2 code is ""ahead"" of the standard as I read
it.

Basically, this test:

num_dims = 0;
MPI_Cart_create(MPI_COMM_WORLD, num_dims, dim_size, periods, reorder,
&comm_cart);

""fails"" since it is expecting the MPI 2.0 behavior where num_dims = 0 was
un(under?)defined. In MPI 2.1, we updated the description with ""If ndims
is zero, then a zero-dimensional Cartesian topology is created"", so I'm
happy marking this as an invalid test.

However, this test:
num_dims = 0;
MPI_Cart_map(comm_cart, num_dims, dim_size, periods, &newrank);

also ""fails"" since it doesn't report an error. I don't see any comments in
the 2.1 standard or 2.2 issues that suggest MPI_Cart_map() changed in the
same way that MPI_Cart_create() did, but it seems logical. So, my question
is, is this correct behavior for MPI_Cart_map() and if so, should we add a
comment in the 2.2 standard (or errata since I believe new tickets are
closed?) that says num_dims=0 is a valid argument?

Finally, the third test that ""fails"" is doing this:

edges[0] = 0; edges[1] = 3; edges[2] = 0; edges[3] = 3; edges[4] = 0;
edges[5] = 2;
MPI_Graph_create(MPI_COMM_WORLD, nnodes, index, edges, reorder,
&comm_graph)

Again, I don't see any comments on null edges for MPI_Graph_create() in
2.1 or 2.2 tickets. So is this correct behavior?

Thanks.


Brian Smith
BlueGene MPI Development
IBM Rochester
Phone: 507 253 4717
smithbr@us.ibm.com
}}}"	bug	new	major	future	imts			jratt@… blocksom@…