On 01/27/2012 02:50 PM, Philip Balister wrote: > On 01/27/2012 05:36 PM, Alex wrote: >> Thanks josh, >> Do you notice that the http://www.joshknows.com cannot be accessed today? I >> am within US. > > http://www.downforeveryoneorjustme.com/joshknows.com >
Thanks guys. There was a DNS issue. -Josh > Philip > >> >> B.R. >> Changchun (Alex) Zhang >> >> >> -----邮件原件----- >> 发件人: Josh Blum [mailto:[email protected]] >> 发送时间: Friday, January 27, 2012 12:56 PM >> 收件人: Alex >> 抄送: [email protected] >> 主题: Re: [Discuss-gnuradio]which architecture is used for SIMD optimized >> math blocks of gr-blocks >> >> >>> >>> I see that there are some work on the SIMD optimized math blocks in >>> gr-blocks. I am wondering what kind of computer is used for your test >>> regarding this SIMD optimization. >>> >>> >> >> Code has been re-based and moved to this branch, BTW: >> http://gnuradio.org/cgit/jblum.git/log/?h=new_blocks >> >> The for the floating point version of the multiplier, and adder blocks, and >> decimating FIR filter: the work function calls into a libvolk math kernel. >> Therefore, the new blocks are not architecture specific. >> >> Libvolk handles architecture selection and architecture-specific >> dispatching. In other words, libvolk is responsible for calling into a >> vectorized SIMD implementation that will operate on your architecture. >> >> For a given kernel, there is a generic implementation, and optionally, orc, >> sse*, neon, etc... To see if an optimized kernel is supported on you >> architecture, see the kernel's header in volk/include/volk/*.h >> >> If you have an x86 machine, most likely, there is already an sse* >> implementation of a particular kernel. >> >> -Josh >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
