On Wed, 2010-09-15 at 17:06 +0200, Thomas Pornin wrote: > Hello all, > > gcc38 is documented to be a PS3, with a 3.2 Ghz Cell processor (PowerPC > architecture). Every (integer) code I run on it seems "sluggish". This > covers both my own C and assembly code, and, for instance, OpenSSL: > "openssl speed sha256" reports a top hashing speed of about 52 MB/s, as > if the CPU was running at 1 GHz or so. > > However, the kernel reports that the processor should be able to > run at 3.2 GHz. Maybe there is a problem with the automatic > frequency downscaling (the frequency failing to go up when the CPU > is not idle) ? Or is there something I utterly misunderstood ?
To run code on the 3.2 GHz SPU you need to invoke a few tools, see below, is it what you're doing? Sincerely, Laurent gue...@ps3gccfarm:~$ cd /home/guerby/example gue...@ps3gccfarm:~/example$ spu-gcc t.c -o spu-t gue...@ps3gccfarm:~/example$ embedspu simple_spu spu-t t_embed.o gue...@ps3gccfarm:~/example$ gcc -o tt tt.c -lspe2 t_embed.o gue...@ps3gccfarm:~/example$ ./tt hello Cell (0x10013008) hello Cell (0x10013280) hello Cell (0x10013518) hello Cell (0x10013790) hello Cell (0x10013a08) hello Cell (0x10013c80) The program has successfully executed. gue...@ps3gccfarm:~/example$ _______________________________________________ Gcc-cfarm-users mailing list Gcc-cfarm-users@gna.org https://mail.gna.org/listinfo/gcc-cfarm-users
