[gambit-list] How use SMP features and forms?

Adam adam.mlmb at gmail.com
Fri Mar 24 15:15:57 EDT 2017


2017-03-24 15:02 GMT+01:00 Marc Feeley <feeley at iro.umontreal.ca>:

> The smp branch is currently a WIP with some unimplemented features (such
> as thread priorities and priority inheritance).  There are also some
> infrequent bugs that show up when stress testing.  Nevertheless it is quite
> usable for experimentation and I am actively working on ironing out the
> bugs.  I expect a stable smp branch by the end of April.


Great!


> Eventually I want the smp branch to be merged with the master branch and
> to make --enable-multiple-threaded-vms the default.  This will only happen
> after extensive portability testing so that the master branch remains very
> stable and can be built “out of the box” without any issues and tinkering.
>

Ok!


> So to answer your questions… You need to build the smp branch to get
> parallel execution. These steps should work:
>
>    git clone https://github.com/gambit/gambit.git
>    cd gambit
>    git checkout smp
>    ./configure
>    make -j4 current-gsc-boot
>    ./configure --enable-single-host --enable-multiple-threaded-vms
>    make -j4 from-scratch
>    make check
>

Great - building either branch of latest commit
210c66cc1d885734bb62a8025fef72801d142d84 as follows, did not build, will
try the way  you suggested.

$ cd gambit-smp
$ git checkout smp
$ ./configure --enable-single-host --enable-multiple-threaded-vms
$ make
[..]
gcc -pthread   -Wno-unused -Wno-write-strings -O1 -fwrapv
-fno-strict-aliasing -fno-trapping-math -fno-math-errno -fschedule-insns2
-fomit-frame-pointer -fPIC -fno-common -mieee-fp -mpc64  -pthread
 -I"../include" -c -o "_kernel.o" -I. -DHAVE_CONFIG_H
-D___GAMBITDIR="\"/usr/local/Gambit\"" -D___SYS_TYPE_CPU="\"x86_64\""
-D___SYS_TYPE_VENDOR="\"unknown\"" -D___SYS_TYPE_OS="\"linux-gnu\""
-D___CONFIGURE_COMMAND="\"./configure '--enable-single-host'
'--enable-multiple-threaded-vms'"\" -D___OBJ_EXTENSION="\".o\""
-D___EXE_EXTENSION="\"\"" -D___BAT_EXTENSION="\"\"" -D___PRIMAL _kernel.c
-D___LIBRARY
_kernel.c: In function ‘___H__20___kernel’:
_kernel.c:6346:27: error: void value not ignored as it ought to be
    ___FLONUM_VAL(___ARG2) = ___set_heartbeat_interval
(___FLONUM_VAL(___ARG1));
                           ^
makefile:164: recipe for target '_kernel.o' failed
make[1]: *** [_kernel.o] Error 1
$ gcc --version
gcc (Debian 4.9.2-10) 4.9.2
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