https://community.nxp.com/t5/S32K/S32R294-SPE/m-p/1265009#M10610 <P>SPE does not look like much faster than C,why?</P><P>this is my code with C and SPE.</P><P>/******code with C*******/</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="code With C" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/142755iD38C9F5327C3D5CA/image-size/large?v=v2&amp;px=999" role="button" title="c.PNG" alt="code With C" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">code With C</span></span></P><P>/******code with SPE*******/<span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="code With SPE" style="width: 951px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/142756iB856ABC437A4F813/image-size/large?v=v2&amp;px=999" role="button" title="spe.png" alt="code With SPE" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">code With SPE</span></span></P> Tue, 20 Apr 2021 09:11:28 GMT Yanyang_smile 2021-04-20T09:11:28Z https://community.nxp.com/t5/S32K/S32R294-SPE/m-p/1265009#M10610 <P>SPE does not look like much faster than C,why?</P><P>this is my code with C and SPE.</P><P>/******code with C*******/</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="code With C" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/142755iD38C9F5327C3D5CA/image-size/large?v=v2&amp;px=999" role="button" title="c.PNG" alt="code With C" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">code With C</span></span></P><P>/******code with SPE*******/<span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="code With SPE" style="width: 951px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/142756iB856ABC437A4F813/image-size/large?v=v2&amp;px=999" role="button" title="spe.png" alt="code With SPE" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">code With SPE</span></span></P> Tue, 20 Apr 2021 09:11:28 GMT https://community.nxp.com/t5/S32K/S32R294-SPE/m-p/1265009#M10610 Yanyang_smile 2021-04-20T09:11:28Z https://community.nxp.com/t5/S32K/S32R294-SPE/m-p/1265776#M10625 <P>Hello,</P> <P>As reference manual express:</P> <P>SPE accelerates operations via the use of short vectors (two, four, or eight elements) within 64-bit<BR />GPRs and the use of Single Instruction Multiple Data (SIMD) operations. SPE 2.1 also includes an accumulator register to allow<BR />for certain back-to-back operations without loop unrolling.</P> <P>Best regards,</P> <P>Peter</P> Wed, 21 Apr 2021 10:17:01 GMT https://community.nxp.com/t5/S32K/S32R294-SPE/m-p/1265776#M10625 petervlna 2021-04-21T10:17:01Z