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38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
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#pragma once
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namespace Grid {
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// L1p optimisation
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inline void bgq_l1p_optimisation(int mode)
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{
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#ifdef QPX
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#undef L1P_CFG_PF_USR
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#define L1P_CFG_PF_USR (0x3fde8000108ll) /* (64 bit reg, 23 bits wide, user/unpriv) */
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uint64_t cfg_pf_usr;
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if ( mode ) {
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cfg_pf_usr =
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L1P_CFG_PF_USR_ifetch_depth(0)
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| L1P_CFG_PF_USR_ifetch_max_footprint(1)
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| L1P_CFG_PF_USR_pf_stream_est_on_dcbt
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| L1P_CFG_PF_USR_pf_stream_establish_enable
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| L1P_CFG_PF_USR_pf_stream_optimistic
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| L1P_CFG_PF_USR_pf_adaptive_throttle(0xF) ;
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// if ( sizeof(Float) == sizeof(double) ) {
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cfg_pf_usr |= L1P_CFG_PF_USR_dfetch_depth(2)| L1P_CFG_PF_USR_dfetch_max_footprint(3) ;
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// } else {
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// cfg_pf_usr |= L1P_CFG_PF_USR_dfetch_depth(1)| L1P_CFG_PF_USR_dfetch_max_footprint(2) ;
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// }
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} else {
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cfg_pf_usr = L1P_CFG_PF_USR_dfetch_depth(1)
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| L1P_CFG_PF_USR_dfetch_max_footprint(2)
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| L1P_CFG_PF_USR_ifetch_depth(0)
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| L1P_CFG_PF_USR_ifetch_max_footprint(1)
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| L1P_CFG_PF_USR_pf_stream_est_on_dcbt
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| L1P_CFG_PF_USR_pf_stream_establish_enable
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| L1P_CFG_PF_USR_pf_stream_optimistic
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| L1P_CFG_PF_USR_pf_stream_prefetch_enable;
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}
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*((uint64_t *)L1P_CFG_PF_USR) = cfg_pf_usr;
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#endif
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}
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}
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