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Add mpi #109

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Add mpi #109

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Simkern
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@Simkern Simkern commented Jul 17, 2024

The present simple implementation makes LightKrylov aware of parallelism.

  • LightKrylov_Constants provides MPI initialisation and finalisation routines
  • The rank, I/O rank and communicator size are private variables in LightKrylov_Constants, namely nid, nio and comm_size, respectively. They are accessible via getter/setter routines only.
  • The user can choose to use any rank for I/O via nio.
  • The implementation is based on mpi_f08 which must be present and linked as an external module in fpm.toml. From what I see, there is no 'serial' version of the library in the sense that it would be natively compatible with serial compilation. Therefore, I have added preprocessor macros that disable the MPI related code and imports in serial cases. The variables nid, comm_size and nio are then set to the default value of 1.

closes #108

Simkern and others added 30 commits March 21, 2024 15:50
@Simkern
fixed typos
affe04e
@loiseaujc
Changed all occurrences of to .
23acc79
@loiseaujc
Revert "Changed all occurrences of to ."
b2b2399 
This reverts commit 23acc79.
@loiseaujc
FYPP implementation until QR factorization.
55ecb09
@loiseaujc
Test Driver.
7587ec9
@loiseaujc
Remove outdated example.
84311ae
@loiseaujc
LightKrylov Constants module.
2572531
@loiseaujc
Removed outdated example (toml file)
0f29bbe
@loiseaujc
Remove old code case.
2d0b629
@loiseaujc
Remove old installation scripts.
5e428c4
@loiseaujc
Python scripts .fypp -> .f90
b990247
@loiseaujc
Added Fortran files.
d399170
@loiseaujc
Arnoldi implementation + bug fixes.
37ae1d0
@loiseaujc
Lanczos bidiagonalization.
8d7e4e7
@loiseaujc
Lapack wrappers.
62bd527
@Simkern
Merge branch 'dev' into update_testing
2bcde0f
@Simkern
Updated strings in tests to conform with FORD
ea0005e
@loiseaujc
Eigs implementation + validated tests for real matrices.
f20fac5
@loiseaujc
svds implementation + tests validated for real matrices.
0b02ece
@loiseaujc
GMRES implementation + validated tests for all real/cmplx types.
38f2f60
@loiseaujc
SPD/Hermitian linop + Conjugate Gradient + tests.
4204f21
@loiseaujc
Added basic operations on arrays of abstract_vectors.
6b6d158
@loiseaujc
Added Schur factorization.
70432f6
@loiseaujc
Added schur / ordschur lapack wrappers.
24053f4
@loiseaujc
Added adjoint of linear operator.
cefd9f6
@loiseaujc
Added Id operator, alpha*A operator and alpha*A + beta*B operator.
4af56b0
@loiseaujc
Misc.
9d12f4e
@loiseaujc
Changed the definition of abstract_spd_linop to abstract_sym_linop.
5cbd5b5
@loiseaujc
Added lanczos_tridiagonalization + tests.
91193c8
@loiseaujc
Added eighs for symmetric/hermitian operators (+ some clean-up).
0b27b44
loiseaujc and others added 28 commits June 20, 2024 17:54
@loiseaujc
Fix gfortran warning.
424fc59
@loiseaujc
Merge branch 'code_clean_up' of github.com:nekStab/LightKrylov into c…
32b5da2 
…ode_clean_up
@loiseaujc
Update svd following stdlib fix.
9cdc5b4
@Simkern
get_size added to TestVectors. fypp deployed and tests passed.
613fbb1
@Simkern
Merge pull request #101 from nekStab/code_clean_up
ee53789 
Code clean up
@loiseaujc
Merge branch 'dev' into add_get_size
d6d346f
@loiseaujc
Merge pull request #100 from nekStab/add_get_size
02c7d03 
added type bound procedure get_size to abstract vector and GL example
@Simkern
Reverted to output style
9d516d7
@Simkern
added test_size export
1fccfb2
@Simkern
added test_size export
6fa1e5d
@Simkern
Moved definitions of vector and linop for testing together with the t…
a7aaa9d 
…ype-bound procedures to from test/TestVectors.f90 and test/TestLinops.f90 to src/TestTypes.f90 within the LightKrylov core.
@Simkern
Deployed LightKrylov_TestTypes
dbbb0c7
@Simkern
set logging to error_level to catch errors
2a9426b
@Simkern
removed unnecessary import
391dcb8
@Simkern
Removed export of test_size to avoid circular dependency when loading…
f5d01ee 
… LightKrylov in TestTypes
@Simkern
Code cleanup, removed unnecessary allocation of X0 (except for block …
9fa4342 
…arnoldi)
@Simkern
Fixed typo in error handling for DGS and orthogonalization that was l…
150e319 
…eading to errors in sp tests
@loiseaujc
Merge pull request #103 from nekStab/separate_testtypes
a091348 
Separate testtypes
@Simkern
Migrated test/TestUtils --> src/TestTypes and renamed to src/TestUtil…
27a9136 
…s. Fixed typos. Changed the specific zero_xxx for the TestVectors to init_zero_xxx to avoid namespace conflict with LightKrylov_Constants.
@loiseaujc
Merge pull request #105 from nekStab/migrate_testutils
80e3d5b 
Migrated test/TestUtils --> src/TestTypes and renamed to src/TestUtil…
@Simkern
added mpi compatibility
cfedea9
@Simkern
added mpi_f08 as external library
7a6940f
@Simkern
cleanup
7ae2c92
@Simkern
ran deployment
5531c4b
@Simkern
added mpi functions
68f3838
@Simkern
moved io check to Logger module
caaf48e
@Simkern
deployment
c0433c9
@Simkern
added preprocessor directives for serial compilation
4b9a318
@Simkern Simkern linked an issue Jul 17, 2024 that may be closed by this pull request
Add MPI awareness to LightKrylov #108
Closed
@Simkern Simkern closed this Jul 17, 2024
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Add MPI awareness to LightKrylov
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@Simkern @loiseaujc