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Improve MPI handling for enums

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This commit is contained in:
Alejandro Gallo 2022-02-14 11:26:35 +01:00
parent e89bd8f150
commit 66f2de1083
1 changed files with 32 additions and 15 deletions
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@ -156,20 +156,23 @@ As an example, for the doubles amplitudes \( T^{ab}_{ij} \), one need two kinds
const std::vector<int> lengths(n, 1);
const MPI_Datatype types[n] = {usizeDt(), usizeDt()};
static_assert(sizeof(Slice<F>::Location) == 2 * sizeof(size_t),
"The Location packing is wrong in your compiler");
// measure the displacements in the struct
size_t j = 0;
MPI_Aint displacements[n];
MPI_Aint base_address, displacements[n];
MPI_Get_address(&measure, &base_address);
MPI_Get_address(&measure.rank, &displacements[j++]);
MPI_Get_address(&measure.source, &displacements[j++]);
for (size_t i = 1; i < n; i++) displacements[i] -= displacements[0];
displacements[0] = 0;
for (size_t i = 0; i < n; i++)
displacements[i] = MPI_Aint_diff(displacements[i], base_address);
MPI_Type_create_struct(n, lengths.data(), displacements, types, &dt);
MPI_Type_commit(&dt);
return dt;
}
static MPI_Datatype enumDt() { return MPI_INT; }
static MPI_Datatype usizeDt() { return MPI_UINT64_T; }
static MPI_Datatype sliceInfo () {
@ -179,22 +182,31 @@ As an example, for the doubles amplitudes \( T^{ab}_{ij} \), one need two kinds
const std::vector<int> lengths(n, 1);
const MPI_Datatype types[n]
= { vector(2, usizeDt())
, enumDt()
, enumDt()
/*, MPI_UINT64_T*/
, vector(sizeof(enum Type), MPI_CHAR)
/*, MPI_UINT64_T*/
, vector(sizeof(enum State), MPI_CHAR)
/*, vector(sizeof(Location), MPI_CHAR)*/
, sliceLocation()
, enumDt()
, vector(sizeof(enum Type), MPI_CHAR)
/*, MPI_UINT64_T*/
};
static_assert(sizeof(enum Type) == 4, "Enum type not 4 bytes long");
static_assert(sizeof(enum State) == 4, "Enum State not 4 bytes long");
static_assert(sizeof(enum Name) == 4, "Enum Name not 4 bytes long");
// create the displacements from the info measurement struct
size_t j = 0;
MPI_Aint displacements[n];
MPI_Get_address(measure.tuple.data(), &displacements[j++]);
MPI_Aint base_address, displacements[n];
MPI_Get_address(&measure, &base_address);
MPI_Get_address(&measure.tuple[0], &displacements[j++]);
MPI_Get_address(&measure.type, &displacements[j++]);
MPI_Get_address(&measure.state, &displacements[j++]);
MPI_Get_address(&measure.from, &displacements[j++]);
MPI_Get_address(&measure.recycling, &displacements[j++]);
for (size_t i = 1; i < n; i++) displacements[i] -= displacements[0];
displacements[0] = 0;
for (size_t i = 0; i < n; i++)
displacements[i] = MPI_Aint_diff(displacements[i], base_address);
MPI_Type_create_struct(n, lengths.data(), displacements, types, &dt);
MPI_Type_commit(&dt);
@ -207,13 +219,15 @@ As an example, for the doubles amplitudes \( T^{ab}_{ij} \), one need two kinds
LocalDatabaseElement measure;
const std::vector<int> lengths(n, 1);
const MPI_Datatype types[n]
= { enumDt()
= { vector(sizeof(enum Name), MPI_CHAR)
/*= { MPI_UINT64_T*/
, sliceInfo()
};
// measure the displacements in the struct
size_t j = 0;
MPI_Aint displacements[n];
MPI_Aint base_address, displacements[n];
MPI_Get_address(&measure, &base_address);
MPI_Get_address(&measure.name, &displacements[j++]);
MPI_Get_address(&measure.info, &displacements[j++]);
for (size_t i = 1; i < n; i++) displacements[i] -= displacements[0];
@ -221,6 +235,9 @@ As an example, for the doubles amplitudes \( T^{ab}_{ij} \), one need two kinds
MPI_Type_create_struct(n, lengths.data(), displacements, types, &dt);
MPI_Type_commit(&dt);
/*return vector( 4 + 4 + 48, MPI_CHAR);*/
// TODO
return vector(sizeof(LocalDatabaseElement), MPI_CHAR);
return dt;
}
@ -2260,9 +2277,9 @@ Atrip::Output Atrip::run(Atrip::Input<F> const& in) {
* double(No)
* double(No)
* (double(No) + double(Nv))
* 1
* 2.0
* (traits::isComplex<F>() ? 2.0 : 1.0)
* 6
* 6.0
/ 1e9
;