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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>Hello,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>This mail just to share and maybe receive information about the operational capacity in streaming (receive) data from the X310.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>My system:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>WBX   ==><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>                  X310==>PCIE-NIUSRPRIO==><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>WBX   ==><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>                .<br>                                                                               </span><span lang=EN-US style='font-family:"Arial","sans-serif"'>==>UHD003.007.003==>PC XEON/UBUNTU 14.04 <o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-US>.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>WBX   ==><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>                  X310==>PCIE-NIUSRPRIO==><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'>WBX   ==><o:p></o:p></span></p><p class=MsoNormal style='text-indent:35.4pt'><span lang=EN-US>                <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Arial","sans-serif"'> PC is 32cores, very high speed bus (>1333MHz)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>From a software point of view, I just configure up to 3 (actually) X310 that are synchronized through daisy chain (10MHz and PPS), then test the highest data rate usable to memory (Shared Memory through BOOST programming).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>And the result on my system is that I can’t transfer data at higher speed than 150Msample/s without overflow<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>For example I can configure:<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>          </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US>6 channel at 25MHz : same thread that occupy 95% of one core capacity and 4 cores at 35% capacity (UHD?) 3*X310<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>          </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US>2 channels at 50MHz: same thread that occupy 60% of one core capacity (A:0,B:0) <o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>          </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US>1 channel at 100MHz: same thread that occupy 60% of one core capacity (A:0)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>          </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US>1 channel at 100MHz and one channel at 50MHZ on two X310 (A:0), two instance of the prgm (2 threads)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I never obtained better results than those (seems to be a bound at 150Msamples/s).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>For any combination I tested above, I can record data from the shm to disk in real time without overflow problem.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>So my questions are:<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>          </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US>Did somebody obtained better streaming results? (seems 200Msamples/s full duplex, i.e. 400 Msamples/s could be obtained)<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>          </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US>Where could be the bottleneck?<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:53.25pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>          </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US>Could the synchronization figure impact the result?  <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you in advance for answers .<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Claude Leménager<o:p></o:p></span></p></div></body></html>