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L1p config bg/q

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paboyle
2017-04-22 11:33:09 +01:00
parent 3844bcf800
commit b9bbe5d188
1 changed files with 37 additions and 0 deletions
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37
lib/simd/l1p.h Normal file
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#pragma once
namespace Grid {
// L1p optimisation
inline void bgq_l1p_optimisation(int mode)
{
#ifdef QPX
#undef L1P_CFG_PF_USR
#define L1P_CFG_PF_USR (0x3fde8000108ll) /* (64 bit reg, 23 bits wide, user/unpriv) */
uint64_t cfg_pf_usr;
if ( mode ) {
cfg_pf_usr =
L1P_CFG_PF_USR_ifetch_depth(0)
| L1P_CFG_PF_USR_ifetch_max_footprint(1)
| L1P_CFG_PF_USR_pf_stream_est_on_dcbt
| L1P_CFG_PF_USR_pf_stream_establish_enable
| L1P_CFG_PF_USR_pf_stream_optimistic
| L1P_CFG_PF_USR_pf_adaptive_throttle(0xF) ;
// if ( sizeof(Float) == sizeof(double) ) {
cfg_pf_usr |= L1P_CFG_PF_USR_dfetch_depth(2)| L1P_CFG_PF_USR_dfetch_max_footprint(3) ;
// } else {
// cfg_pf_usr |= L1P_CFG_PF_USR_dfetch_depth(1)| L1P_CFG_PF_USR_dfetch_max_footprint(2) ;
// }
} else {
cfg_pf_usr = L1P_CFG_PF_USR_dfetch_depth(1)
| L1P_CFG_PF_USR_dfetch_max_footprint(2)
| L1P_CFG_PF_USR_ifetch_depth(0)
| L1P_CFG_PF_USR_ifetch_max_footprint(1)
| L1P_CFG_PF_USR_pf_stream_est_on_dcbt
| L1P_CFG_PF_USR_pf_stream_establish_enable
| L1P_CFG_PF_USR_pf_stream_optimistic
| L1P_CFG_PF_USR_pf_stream_prefetch_enable;
}
*((uint64_t *)L1P_CFG_PF_USR) = cfg_pf_usr;
#endif
}
}