Developer Reference

Contents

pmpcol

Finds the collaborators of a process.

Syntax

void pmpcol
(
MKL_INT*
myproc
,
MKL_INT*
nprocs
,
MKL_INT*
iil
,
MKL_INT*
needil
,
MKL_INT*
neediu
,
MKL_INT*
pmyils
,
MKL_INT*
pmyius
,
MKL_INT*
colbrt
,
MKL_INT*
frstcl
,
MKL_INT*
lastcl
);
Include Files
  • mkl_scalapack.h
Description
Using the output from
pmpim2
and given the information on eigenvalue clusters,
pmpcol
finds the collaborators of
myproc
.
Optimization Notice
Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804
This notice covers the following instruction sets: SSE2, SSE4.2, AVX2, AVX-512.
Input Parameters
myproc
The processor number, 0
myproc
<
nprocs
.
nprocs
The total number of processors available.
iil
The index of the leftmost eigenvalue in the eigenvalue cluster.
needil
The leftmost position in the eigenvalue cluster needed by
myproc
.
neediu
The rightmost position in the eigenvalue cluster needed by
myproc
.
pmyils
array
For each processor
p
, 0 <
p
nprocs
,
pmyils
[
p
-1]
is the index of the first eigenvalue in the eigenvalue cluster to be computed.
pmyils
[
p
-1]
equals zero if
p
stays idle.
pmyius
array
For each processor
p
,
pmyius
[
p
-1]
is the index of the last eigenvalue in the eigenvalue cluster to be computed.
pmyius
[
p
-1]
equals zero if
p
stays idle.
OUTPUT Parameters
colbrt
Non-zero
if
myproc
collaborates.
frstcl
,
lastcl
First and last collaborator of
myproc
.
myproc
collaborates with:
frstcl
, ...,
myproc
-1,
myproc
+1, ...,
lastcl
If
myproc
=
frstcl
, there are no collaborators on the left. If
myproc
=
lastcl
, there are no collaborators on the right.
If
frstcl
= 0 and
lastcl
=
nprocs
-1, then
myproc
collaborates with everybody

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804