DSYTRD uses NB = 120 and IB = 20.
Is it possible tuning DSYTRD in PLASMA 2.4.5?
In order to tune DSYTRD I tried to change NB and IB by the following way:
CALL PLASMA_Set(PLASMA_TILE_SIZE, NB, info)
CALL PLASMA_Set(PLASMA_INNER_BLOCK_SIZE, IB, info)
Unfortunately, PLASMA_DSYTRD fails for all values of block sizes other than NB=120, IB=20 (the same as in source PLASMA codes)
PLASMA ERROR: PLASMA_dsytrd(): invalid T descriptor
Nmin= 18000 Nmax = 20000 Nstep = 2000
NB = 80 IB = 20
N NB IB perf d_time info.
PLASMA CORES 16 INFO= 0
18000 80 20 516875107.743450.......
dsytrd fails with info = -8