Run Python under strace sometime. Laugh as it attempts to open thousands of non-existent files just to start up. Cry when you imagine that happening on a thousa

Run Python under strace sometime. Laugh as it attempts to open thousands of non-existent files just to start up. Cry when you imagine that happening on a thousand-node scientific computing cluster with an NFS root. IIRC we saw something on the order of 10-20 minutes to get Python started on every node of a Blue Gene allocation.