i.MX Processorsのトピックddr benchmarking https://community.nxp.com/t5/i-MX-Processors/ddr-benchmarking/m-p/266451#M27815 <HTML><HEAD></HEAD><BODY><P><SPAN style="font-size: 10.0pt; font-family: 'Arial','sans-serif';">During another investigation I have noticed that the performance between SL and S are enormous when it comes to memory benchmarking. </SPAN></P><P></P><P><SPAN style="font-size: 10.0pt; font-family: 'Arial','sans-serif';">I have run the same code and used the same blocks within the ASIC so it should be identical result. The SL and S has the same ARM CPU (996MHz) and PL310 cache and DDR controller. The only difference are the L2$ size that are half in SL compared with S. </SPAN></P><P></P><P><SPAN style="font-size: 10.0pt; font-family: 'Arial','sans-serif';">My measurement shows that the difference are ~ 5 times better in S than in SL. Could you just elaborated with this result and also the expected benchmark for the DDR (400 MHz)?</SPAN></P></BODY></HTML> Thu, 30 Jan 2014 10:12:29 GMT mrlantz 2014-01-30T10:12:29Z ddr benchmarking https://community.nxp.com/t5/i-MX-Processors/ddr-benchmarking/m-p/266451#M27815 <HTML><HEAD></HEAD><BODY><P><SPAN style="font-size: 10.0pt; font-family: 'Arial','sans-serif';">During another investigation I have noticed that the performance between SL and S are enormous when it comes to memory benchmarking. </SPAN></P><P></P><P><SPAN style="font-size: 10.0pt; font-family: 'Arial','sans-serif';">I have run the same code and used the same blocks within the ASIC so it should be identical result. The SL and S has the same ARM CPU (996MHz) and PL310 cache and DDR controller. The only difference are the L2$ size that are half in SL compared with S. </SPAN></P><P></P><P><SPAN style="font-size: 10.0pt; font-family: 'Arial','sans-serif';">My measurement shows that the difference are ~ 5 times better in S than in SL. Could you just elaborated with this result and also the expected benchmark for the DDR (400 MHz)?</SPAN></P></BODY></HTML> Thu, 30 Jan 2014 10:12:29 GMT https://community.nxp.com/t5/i-MX-Processors/ddr-benchmarking/m-p/266451#M27815 mrlantz 2014-01-30T10:12:29Z