On Wednesday, March 26, 2014 4:28:20 AM UTC-7, Bill Hart wrote:
> Hi all,
>
>
> We still don't have any tuning code on ARM or Atom for MPIR. Note MPIR will
> run extremely slowly without new tuning values due to recent changes.
>
>
> Please let us know on the mpir-devel list if you are willing to help.
>
>
>
> As far as we know, there are three things that can go wrong with tuning
> (which is otherwise very simple), but they all have very easy fixes, so
> please let us know if tune does not complete for some reason and we'll give
> instructions.
>
>
>
> git clone https://github.com/wbhart/mpir
> cd mpir
> ./configure
> make -j
> cd tune
> make tune
>
>
>
> Bill.
Here are the results from an Atom N270 (gcc 4.8.2)
/* Generated by tuneup.c, 2014-03-27, gcc 4.8 */
#define MUL_KARATSUBA_THRESHOLD 24
#define MUL_TOOM3_THRESHOLD 78
#define MUL_TOOM4_THRESHOLD 185
#define MUL_TOOM8H_THRESHOLD 286
#define SQR_BASECASE_THRESHOLD 0 /* always (native) */
#define SQR_KARATSUBA_THRESHOLD 36
#define SQR_TOOM3_THRESHOLD 117
#define SQR_TOOM4_THRESHOLD 298
#define SQR_TOOM8_THRESHOLD 309
#define POWM_THRESHOLD 39
#define USE_PREINV_DIVREM_1 1 /* native */
#define USE_PREINV_MOD_1 1 /* native */
#define DIVREM_2_THRESHOLD 0 /* always */
#define DIVEXACT_1_THRESHOLD 0 /* always (native) */
#define MODEXACT_1_ODD_THRESHOLD 0 /* always (native) */
#define MOD_1_1_THRESHOLD 28
#define MOD_1_2_THRESHOLD 28
#define MOD_1_3_THRESHOLD 93
#define DIVREM_HENSEL_QR_1_THRESHOLD 197
#define RSH_DIVREM_HENSEL_QR_1_THRESHOLD 95
#define DIVREM_EUCLID_HENSEL_THRESHOLD 292
#define MUL_FFT_FULL_THRESHOLD 3552
#define SQR_FFT_FULL_THRESHOLD 2272
#define MULLOW_BASECASE_THRESHOLD 5
#define MULLOW_DC_THRESHOLD 52
#define MULLOW_MUL_THRESHOLD 375
#define MULHIGH_BASECASE_THRESHOLD 7
#define MULHIGH_DC_THRESHOLD 51
#define MULHIGH_MUL_THRESHOLD 406
#define MULMOD_2EXPM1_THRESHOLD 20
#define SB_DIVAPPR_Q_SMALL_THRESHOLD 0 /* always */
#define SB_DIV_QR_SMALL_THRESHOLD 0 /* always */
#define DC_DIV_QR_THRESHOLD 31
#define INV_DIV_QR_THRESHOLD 1387
#define INV_DIVAPPR_Q_N_THRESHOLD 31
#define DC_DIV_Q_THRESHOLD 110
#define INV_DIV_Q_THRESHOLD 1078
#define DC_DIVAPPR_Q_THRESHOLD 45
#define INV_DIVAPPR_Q_THRESHOLD 10956
#define DC_BDIV_QR_THRESHOLD 37
#define DC_BDIV_Q_THRESHOLD 124
#define ROOTREM_THRESHOLD 7
#define MATRIX22_STRASSEN_THRESHOLD 14
#define HGCD_THRESHOLD 101
#define HGCD_APPR_THRESHOLD 50
#define HGCD_REDUCE_THRESHOLD 487
#define GCD_DC_THRESHOLD 451
#define GCDEXT_DC_THRESHOLD 300
#define JACOBI_BASE_METHOD 2
#define GET_STR_DC_THRESHOLD 12
#define GET_STR_PRECOMPUTE_THRESHOLD 23
#define SET_STR_DC_THRESHOLD 102
#define SET_STR_PRECOMPUTE_THRESHOLD 1057
#define FAC_DSC_THRESHOLD 180
#define FAC_ODD_THRESHOLD 29
/* fft_tuning -- autogenerated by tune-fft */
#define FFT_TAB \
{ { 3, 3 }, { 3, 2 }, { 2, 1 }, { 1, 0 }, { 1, 0 } }
#define MULMOD_TAB \
{ 4, 3, 3, 3, 3, 2, 2, 2, 3, 2, 2, 2, 2, 1, 1 }
#define FFT_N_NUM 15
#define FFT_MULMOD_2EXPP1_CUTOFF 128
/* Tuneup completed successfully, took 774 seconds */
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