Re: [PATCH] Attempt to fix OpenBLAS on MIPS.

[Mark H Weaver <mhw@netris.org>]

Mark H Weaver <mhw@netris.org> writes:

> Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de> writes:
>
>> Attached is a patch that *might* fix the build of OpenBLAS on MIPS.
>>
>> The LOONGSON3A and LOONGSON3B targets both enable the use of special
>> extended instructions which may not be available on other MIPS CPUs.
>> This patch forces the SICORTEX target to be used, which should limit the
>> code to only standard MIPS instructions.
>>
>> I don’t know if this would actually work and I note that SICORTEX is
>> listed as a “mips” target, rather than “mips64”, so maybe this is doomed
>> to fail.  I would appreciate it if someone with a MIPS machine could
>> test this patch.
>
> With this patch, openblas builds successfully on mips64el, although I
> cannot say whether it works, since there are no tests.

I've since learned that normally tests are run during the 'build' phase,
but that doesn't seem to be happening anymore on MIPS with this new
patch applied.  Here's the transcript of the end of the build phase:

--8<---------------cut here---------------start------------->8---
ar  -ru ../libopenblas_mipsp-r0.2.14.a samax_k.o samin_k.o smax_k.o smin_k.o isamax_k.o isamin_k.o ismax_k.o ismin_k.o sasum_k.o saxpy_k.o scopy_k.o sdot_k.o sdsdot_k.o dsdot_k.o snrm2_k.o srot_k.o sscal_k.o sswap_k.o saxpby_k.o sgemv_n.o sgemv_t.o ssymv_U.o ssymv_L.o sger_k.o sgemm_kernel.o sgemm_incopy.o sgemm_itcopy.o sgemm_oncopy.o sgemm_otcopy.o sgemm_beta.o strmm_kernel_LN.o strmm_kernel_LT.o strmm_kernel_RN.o strmm_kernel_RT.o strsm_kernel_LN.o strsm_kernel_LT.o strsm_kernel_RN.o strsm_kernel_RT.o strmm_iunucopy.o strmm_iunncopy.o strmm_ilnucopy.o strmm_ilnncopy.o strmm_iutucopy.o strmm_iutncopy.o strmm_iltucopy.o strmm_iltncopy.o strmm_ounucopy.o strmm_ounncopy.o strmm_olnucopy.o strmm_olnncopy.o strmm_outucopy.o strmm_outncopy.o strmm_oltucopy.o strmm_oltncopy.o strsm_iunucopy.o strsm_iunncopy.o strsm_ilnucopy.o strsm_ilnncopy.o strsm_iutucopy.o strsm_iutncopy.o strsm_iltucopy.o strsm_iltncopy.o strsm_ounucopy.o strsm_ounncopy.o strsm_olnucopy.o strsm_olnncopy.o strsm_outucopy.o strsm_outncopy.o strsm_oltucopy.o strsm_oltncopy.o ssymm_iutcopy.o ssymm_iltcopy.o ssymm_outcopy.o ssymm_oltcopy.o somatcopy_k_cn.o somatcopy_k_rn.o somatcopy_k_ct.o somatcopy_k_rt.o sgeadd_k.o damax_k.o damin_k.o dmax_k.o dmin_k.o idamax_k.o idamin_k.o idmax_k.o idmin_k.o dasum_k.o daxpy_k.o dcopy_k.o ddot_k.o dnrm2_k.o drot_k.o dscal_k.o dswap_k.o daxpby_k.o dgemv_n.o dgemv_t.o dsymv_U.o dsymv_L.o dger_k.o dgemm_kernel.o dgemm_incopy.o dgemm_itcopy.o dgemm_oncopy.o dgemm_otcopy.o dgemm_beta.o dtrmm_kernel_LN.o dtrmm_kernel_LT.o dtrmm_kernel_RN.o dtrmm_kernel_RT.o dtrsm_kernel_LN.o dtrsm_kernel_LT.o dtrsm_kernel_RN.o dtrsm_kernel_RT.o dtrmm_iunucopy.o dtrmm_iunncopy.o dtrmm_ilnucopy.o dtrmm_ilnncopy.o dtrmm_iutucopy.o dtrmm_iutncopy.o dtrmm_iltucopy.o dtrmm_iltncopy.o dtrmm_ounucopy.o dtrmm_ounncopy.o dtrmm_olnucopy.o dtrmm_olnncopy.o dtrmm_outucopy.o dtrmm_outncopy.o dtrmm_oltucopy.o dtrmm_oltncopy.o dtrsm_iunucopy.o dtrsm_iunncopy.o dtrsm_ilnucopy.o dtrsm_ilnncopy.o dtrsm_iutucopy.o dtrsm_iutncopy.o dtrsm_iltucopy.o dtrsm_iltncopy.o dtrsm_ounucopy.o dtrsm_ounncopy.o dtrsm_olnucopy.o dtrsm_olnncopy.o dtrsm_outucopy.o dtrsm_outncopy.o dtrsm_oltucopy.o dtrsm_oltncopy.o dsymm_iutcopy.o dsymm_iltcopy.o dsymm_outcopy.o dsymm_oltcopy.o domatcopy_k_cn.o domatcopy_k_rn.o domatcopy_k_ct.o domatcopy_k_rt.o dgeadd_k.o camax_k.o camin_k.o icamax_k.o icamin_k.o casum_k.o caxpy_k.o caxpyc_k.o ccopy_k.o cdotc_k.o cdotu_k.o cnrm2_k.o csrot_k.o cscal_k.o cswap_k.o caxpby_k.o cgemv_n.o cgemv_t.o cgemv_r.o cgemv_c.o cgemv_o.o cgemv_u.o cgemv_s.o cgemv_d.o csymv_U.o csymv_L.o chemv_U.o chemv_L.o chemv_V.o chemv_M.o cgeru_k.o cgerc_k.o cgerv_k.o cgerd_k.o cgemm_kernel_n.o cgemm_kernel_r.o cgemm_kernel_l.o cgemm_kernel_b.o cgemm_incopy.o cgemm_itcopy.o cgemm_oncopy.o cgemm_otcopy.o cgemm_beta.o ctrmm_kernel_LN.o ctrmm_kernel_LT.o ctrmm_kernel_LR.o ctrmm_kernel_LC.o ctrmm_kernel_RN.o ctrmm_kernel_RT.o ctrmm_kernel_RR.o ctrmm_kernel_RC.o ctrsm_kernel_LN.o ctrsm_kernel_LT.o ctrsm_kernel_LR.o ctrsm_kernel_LC.o ctrsm_kernel_RN.o ctrsm_kernel_RT.o ctrsm_kernel_RR.o ctrsm_kernel_RC.o ctrmm_iunucopy.o ctrmm_iunncopy.o ctrmm_ilnucopy.o ctrmm_ilnncopy.o ctrmm_iutucopy.o ctrmm_iutncopy.o ctrmm_iltucopy.o ctrmm_iltncopy.o ctrmm_ounucopy.o ctrmm_ounncopy.o ctrmm_olnucopy.o ctrmm_olnncopy.o ctrmm_outucopy.o ctrmm_outncopy.o ctrmm_oltucopy.o ctrmm_oltncopy.o ctrsm_iunucopy.o ctrsm_iunncopy.o ctrsm_ilnucopy.o ctrsm_ilnncopy.o ctrsm_iutucopy.o ctrsm_iutncopy.o ctrsm_iltucopy.o ctrsm_iltncopy.o ctrsm_ounucopy.o ctrsm_ounncopy.o ctrsm_olnucopy.o ctrsm_olnncopy.o ctrsm_outucopy.o ctrsm_outncopy.o ctrsm_oltucopy.o ctrsm_oltncopy.o csymm_iutcopy.o csymm_iltcopy.o csymm_outcopy.o csymm_oltcopy.o chemm_iutcopy.o chemm_iltcopy.o chemm_outcopy.o chemm_oltcopy.o comatcopy_k_cn.o comatcopy_k_rn.o comatcopy_k_ct.o comatcopy_k_rt.o comatcopy_k_cnc.o comatcopy_k_rnc.o comatcopy_k_ctc.o comatcopy_k_rtc.o cgeadd_k.o zamax_k.o zamin_k.o izamax_k.o izamin_k.o zasum_k.o zaxpy_k.o zaxpyc_k.o zcopy_k.o zdotc_k.o zdotu_k.o znrm2_k.o zdrot_k.o zscal_k.o zswap_k.o zaxpby_k.o zgemv_n.o zgemv_t.o zgemv_r.o zgemv_c.o zgemv_o.o zgemv_u.o zgemv_s.o zgemv_d.o zsymv_U.o zsymv_L.o zhemv_U.o zhemv_L.o zhemv_V.o zhemv_M.o zgeru_k.o zgerc_k.o zgerv_k.o zgerd_k.o zgemm_kernel_n.o zgemm_kernel_r.o zgemm_kernel_l.o zgemm_kernel_b.o zgemm_incopy.o zgemm_itcopy.o zgemm_oncopy.o zgemm_otcopy.o zgemm_beta.o ztrmm_kernel_LN.o ztrmm_kernel_LT.o ztrmm_kernel_LR.o ztrmm_kernel_LC.o ztrmm_kernel_RN.o ztrmm_kernel_RT.o ztrmm_kernel_RR.o ztrmm_kernel_RC.o ztrsm_kernel_LN.o ztrsm_kernel_LT.o ztrsm_kernel_LR.o ztrsm_kernel_LC.o ztrsm_kernel_RN.o ztrsm_kernel_RT.o ztrsm_kernel_RR.o ztrsm_kernel_RC.o ztrmm_iunucopy.o ztrmm_iunncopy.o ztrmm_ilnucopy.o ztrmm_ilnncopy.o ztrmm_iutucopy.o ztrmm_iutncopy.o ztrmm_iltucopy.o ztrmm_iltncopy.o ztrmm_ounucopy.o ztrmm_ounncopy.o ztrmm_olnucopy.o ztrmm_olnncopy.o ztrmm_outucopy.o ztrmm_outncopy.o ztrmm_oltucopy.o ztrmm_oltncopy.o ztrsm_iunucopy.o ztrsm_iunncopy.o ztrsm_ilnucopy.o ztrsm_ilnncopy.o ztrsm_iutucopy.o ztrsm_iutncopy.o ztrsm_iltucopy.o ztrsm_iltncopy.o ztrsm_ounucopy.o ztrsm_ounncopy.o ztrsm_olnucopy.o ztrsm_olnncopy.o ztrsm_outucopy.o ztrsm_outncopy.o ztrsm_oltucopy.o ztrsm_oltncopy.o zsymm_iutcopy.o zsymm_iltcopy.o zsymm_outcopy.o zsymm_oltcopy.o zhemm_iutcopy.o zhemm_iltcopy.o zhemm_outcopy.o zhemm_oltcopy.o zomatcopy_k_cn.o zomatcopy_k_rn.o zomatcopy_k_ct.o zomatcopy_k_rt.o zomatcopy_k_cnc.o zomatcopy_k_rnc.o zomatcopy_k_ctc.o zomatcopy_k_rtc.o zgeadd_k.o lsame.o scabs1.o dcabs1.o
ar: `u' modifier ignored since `D' is the default (see `U')
make[1]: Leaving directory '/tmp/nix-build-openblas-0.2.14.drv-0/xianyi-OpenBLAS-2b0d8a8/kernel'
make[1]: warning: -jN forced in submake: disabling jobserver mode.
make[1]: Entering directory '/tmp/nix-build-openblas-0.2.14.drv-0/xianyi-OpenBLAS-2b0d8a8/exports'
perl ./gensymbol linktest  mips64 _ 0 0 1 1 0 0 "" "" > linktest.c
gcc -O2 -Wall -mabi=n32 -DF_INTERFACE_GFORT -fPIC -DNO_LAPACK -DNO_LAPACKE -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=4 -DUSE_SIMPLE_THREADED_LEVEL3 -DASMNAME= -DASMFNAME=_ -DNAME=_ -DCNAME= -DCHAR_NAME=\"_\" -DCHAR_CNAME=\"\" -DNO_AFFINITY -I..  -shared -o ../libopenblas_mipsp-r0.2.14.so \
-Wl,--whole-archive ../libopenblas_mipsp-r0.2.14.a -Wl,--no-whole-archive \
-Wl,-soname,libopenblas.so.0 -lm -lpthread -lm -lpthread
gcc -O2 -Wall -mabi=n32 -DF_INTERFACE_GFORT -fPIC -DNO_LAPACK -DNO_LAPACKE -DSMP_SERVER -DNO_WARMUP -DMAX_CPU_NUMBER=4 -DUSE_SIMPLE_THREADED_LEVEL3 -DASMNAME= -DASMFNAME=_ -DNAME=_ -DCNAME= -DCHAR_NAME=\"_\" -DCHAR_CNAME=\"\" -DNO_AFFINITY -I..  -w -o linktest linktest.c ../libopenblas_mipsp-r0.2.14.so  && echo OK.
OK.
rm -f linktest
make[1]: Leaving directory '/tmp/nix-build-openblas-0.2.14.drv-0/xianyi-OpenBLAS-2b0d8a8/exports'

 OpenBLAS build complete. (BLAS CBLAS)

  OS               ... Linux             
  Architecture     ... mips64               
  BINARY           ... 32bit                 
  C compiler       ... GCC  (command line : gcc)
  Fortran compiler ... GFORTRAN  (command line : gfortran)
  Library Name     ... libopenblas_mipsp-r0.2.14.a (Multi threaded; Max num-threads is 4)

To install the library, you can run "make PREFIX=/path/to/your/installation install".

phase `build' succeeded after 1098 seconds
--8<---------------cut here---------------end--------------->8---

     Mark