Looks perty good
It's a nice system, especially with its use of optics (pluggable) to link units together. Switching to co-packaged optics (CPO) should give it some extra edge in future.
It must be noted though (imho) that two NVL72 racks would be 25% faster than a CloudMatrix 384, at 88% of the price, while occupying 1/8th of the space, and consuming just 40% of the juice.
But yes, where NVL72s (or similar) are not available, a CloudMatrix 384 could be worthwhile -- provided there's software to run on it (eg. on top of Huawei's CANN for Ascend NPUs).