<p>If you’re running <a href="https://fosstodon.org/tags/ComfyUI" class="mention hashtag" rel="tag">#<span>ComfyUI</span></a> on an Apple Silicon Mac (M1/M2), you might have encountered the frustrating error message: “Trying to convert Float8_e4m3fn to the MPS backend but it does not have support for that dtype“. This comprehensive guide will walk you through understanding and solving this error, ensuring smooth operation of your AI workflows on Apple Silicon.</p><p>Solutions: <br />- fp8_unet to false in node (my case)<br />- Force fp16 (common case)</p><p><a href="https://fosstodon.org/tags/appleSilicon" class="mention hashtag" rel="tag">#<span>appleSilicon</span></a> <a href="https://fosstodon.org/tags/TIL" class="mention hashtag" rel="tag">#<span>TIL</span></a> <a href="https://fosstodon.org/tags/article" class="mention hashtag" rel="tag">#<span>article</span></a></p><p><a href="https://studywarehouse.com/solution-trying-to-convert-float8_e4m3fn-to-the-mps-backend-but-it-does-not-have-support-for-that-dtype/" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="ellipsis">studywarehouse.com/solution-tr</span><span class="invisible">ying-to-convert-float8_e4m3fn-to-the-mps-backend-but-it-does-not-have-support-for-that-dtype/</span></a></p>