Section CP_FM_GEMM

• Benchmark and test the cp_fm_gemm routines by multiplying C=A*B

• Section path: CP2K_INPUT / TEST / CP_FM_GEMM

• This section can be repeated and can be optional.

• Subsections

  • none

• Keywords

  • FORCE_BLOCKSIZE
  • GRID_2D
  • K
  • M
  • N
  • NCOL_BLOCK
  • NROW_BLOCK
  • N_LOOP
  • ROW_MAJOR
  • TRANSA
  • TRANSB

• Keyword descriptions

  FORCE_BLOCKSIZE
  	FORCE_BLOCKSIZE
  	Forces the blocksize, even if this implies that a few processes might have no data
  	This optional keyword cannot be repeated and it expects precisely one logical.
  	The lone keyword behaves as a switch to .TRUE.
  	Default value: .FALSE.

  GRID_2D
  	GRID_2D 64 16
  	Explicitly set the blacs 2D processor layout. If the product differs from the number of MPI ranks, it is ignored and a default nearly square layout is used.
  	This optional keyword cannot be repeated and it expects precisely 2 integers.
  	Default values: 1 1

  K
  	A 1024
  	Dimension 1 of C
  	This optional keyword cannot be repeated and it expects precisely one integer.
  	Default value: 256

  M
  	A 1024
  	Inner dimension M
  	This optional keyword cannot be repeated and it expects precisely one integer.
  	Default value: 256

  N
  	A 1024
  	Dimension 2 of C
  	This optional keyword cannot be repeated and it expects precisely one integer.
  	Default value: 256

  NCOL_BLOCK
  	NROW_BLOCK 64
  	block_size for cols
  	This optional keyword cannot be repeated and it expects precisely one integer.
  	Default value: 32

  NROW_BLOCK
  	NROW_BLOCK 64
  	block_size for rows
  	This optional keyword cannot be repeated and it expects precisely one integer.
  	Default value: 32

  N_LOOP
  	N_LOOP 10
  	Number of cp_fm_gemm operations being timed (useful for small matrices).
  	This optional keyword cannot be repeated and it expects precisely one integer.
  	Default value: 10

  ROW_MAJOR
  	ROW_MAJOR .FALSE.
  	Use a row major blacs grid
  	This optional keyword cannot be repeated and it expects precisely one logical.
  	The lone keyword behaves as a switch to .TRUE.
  	Default value: .TRUE.

  TRANSA
  	TRANSA
  	Transpose matrix A
  	This optional keyword cannot be repeated and it expects precisely one logical.
  	The lone keyword behaves as a switch to .TRUE.
  	Default value: .FALSE.

  TRANSB
  	TRANSB
  	Transpose matrix B
  	This optional keyword cannot be repeated and it expects precisely one logical.
  	The lone keyword behaves as a switch to .TRUE.
  	Default value: .FALSE.