Hi,
I'm aware of the segfaults on sparc64. I've derived some adequate
tuning values for this machine, so won't worry about it too much.
Tuning has always been dodgy and always crashed on numerous machines.
We need a big drive to sort this out in the future, but it's a huge
job. The crash in the fft tuning code is almost certainly the tuning
code itself, and it was expected that it would fail on a few machines.
We simply do what we can for now. Thanks very much for the figures.
I'll add the new values in tonight and tomorrow (when Leif supplies
his). This is probably realistically about all we are going to get.
There are default parameters for old machines which should be
sufficient given that you practically have to go to a museum to view
some of them.
Bill.
On 24 October 2012 13:34, Jean-Pierre Flori <jpfl...@gmail.com> wrote:
> Another sparc machine (same segfault):
>
> uname -a
> SunOS infres1 5.10 Generic_139555-08 sun4v sparc SUNW,T5140
>
> prtdiag
> System Configuration: Sun Microsystems sun4v T5140
> Memory size: 16160 Megabytes
>
> ================================ Virtual CPUs
> ================================
>
>
> CPU ID Frequency Implementation Status
> ------ --------- ---------------------- -------
> 0 1165 MHz SUNW,UltraSPARC-T2+ on-line
> ...
>
> gcc -v
> Reading specs from
> /local/packages/gcc3/bin/../lib/gcc/sparc-sun-solaris2.10/3.4.3/specs
>
> Configured with:
> /sfw10/builds/build/sfw10-patch/usr/src/cmd/gcc/gcc-3.4.3/configure
> --prefix=/usr/sfw --with-as=/usr/ccs/bin/as --without-gnu-as
> --with-ld=/usr/ccs/bin/ld --without-gnu-ld --enable-languages=c,c++
> --enable-shared
> Thread model: posix
> gcc version 3.4.3 (csl-sol210-3_4-branch+sol_rpath)
>
> ./config.guess
> ultrasparc-sun-solaris2.10
>
>
> ./tuneup
> Parameters for ./mpn/sparc64/gmp-mparam.h
> Using: CPU cycle counter, supplemented by microsecond getrusage()
> speed_precision 1000000, speed_unittime 8.58e-10 secs, CPU freq 1165.00 MHz
> DEFAULT_MAX_SIZE 1000, fft_max_size 50000
>
> /* Generated by tuneup.c, 2012-10-24, gcc 3.4 */
>
> #define MUL_KARATSUBA_THRESHOLD 22
> #define MUL_TOOM3_THRESHOLD 78
> #define MUL_TOOM4_THRESHOLD 390
> #define MUL_TOOM8H_THRESHOLD 390
>
> #define SQR_BASECASE_THRESHOLD 8
> #define SQR_KARATSUBA_THRESHOLD 54
> #define SQR_TOOM3_THRESHOLD 87
> #define SQR_TOOM4_THRESHOLD 426
> #define SQR_TOOM8_THRESHOLD 426
>
> #define POWM_THRESHOLD 984
>
> #define HGCD_THRESHOLD 45
> #define GCD_DC_THRESHOLD 57
> #define GCDEXT_DC_THRESHOLD 354
> #define JACOBI_BASE_METHOD 2
>
> #define DIVREM_1_NORM_THRESHOLD MP_SIZE_T_MAX /* never */
> #define DIVREM_1_UNNORM_THRESHOLD MP_SIZE_T_MAX /* never */
> #define MOD_1_NORM_THRESHOLD MP_SIZE_T_MAX /* never */
> #define MOD_1_UNNORM_THRESHOLD MP_SIZE_T_MAX /* never */
>
> #define USE_PREINV_DIVREM_1 1
> #define USE_PREINV_MOD_1 1
> #define DIVREM_2_THRESHOLD MP_SIZE_T_MAX /* never */
>
> #define DIVEXACT_1_THRESHOLD 0 /* always */
> #define MODEXACT_1_ODD_THRESHOLD 0 /* always */
> #define MOD_1_1_THRESHOLD 23
> #define MOD_1_2_THRESHOLD 23
> #define MOD_1_3_THRESHOLD 23
>
> #define DIVREM_HENSEL_QR_1_THRESHOLD 996
> #define RSH_DIVREM_HENSEL_QR_1_THRESHOLD 996
> #define DIVREM_EUCLID_HENSEL_THRESHOLD 45
>
> #define ROOTREM_THRESHOLD 3
>
> #define GET_STR_DC_THRESHOLD 13
> #define GET_STR_PRECOMPUTE_THRESHOLD 30
> #define SET_STR_DC_THRESHOLD 210
> #define SET_STR_PRECOMPUTE_THRESHOLD 238
>
> #define MUL_FFT_FULL_THRESHOLD 1248
>
> #define SQR_FFT_FULL_THRESHOLD 2016
>
>
> #define MULLOW_BASECASE_THRESHOLD 0 /* always */
> #define MULLOW_DC_THRESHOLD 14
> #define MULLOW_MUL_THRESHOLD 1989
>
> #define MULHIGH_BASECASE_THRESHOLD 4
> #define MULHIGH_DC_THRESHOLD 11
> #define MULHIGH_MUL_THRESHOLD 3114
>
> #define MULMOD_2EXPM1_THRESHOLD 12
>
> #define FAC_UI_THRESHOLD 1024
> #define DC_DIV_QR_THRESHOLD 10
> #define DC_DIVAPPR_Q_N_THRESHOLD 45
> #define INV_DIV_QR_THRESHOLD 309
>
> #define INV_DIVAPPR_Q_N_THRESHOLD 45
> #define DC_DIV_Q_THRESHOLD 75
> #define INV_DIV_Q_THRESHOLD 1787
> #define DC_DIVAPPR_Q_THRESHOLD 55
> #define INV_DIVAPPR_Q_THRESHOLD 5922
> #define DC_BDIV_QR_THRESHOLD 100
> #define DC_BDIV_Q_THRESHOLD 15
>
>
> /* fft_tuning -- autogenerated by tune-fft */
>
> #define FFT_TAB \
> { { 3, 2 }, { 3, 2 }, { 2, 1 }, { 1, 0 }, { 0, 0 } }
>
> #define MULMOD_TAB \
> { gmake: *** [tune] Segmentation Fault
>
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