Houdini 19 Wishlist in Lounge/General chat Posted February 16 · Edited February 16 by eloop On 13/12/2019 at 9:41 AM, flcc said: I wish sideFX introduce some sort of global variable in VEX. This would avoid the use of a sop solver in many cases. I suspect that if they didn't do it, they must have good reasons. But since they are in a logic of reducing the back and forth between different contexts, this could be cool. Your intuition about the good reasons is correct. From what I understand VEX implements what's called a "single instruction multiple data" (SIMD) processing model, meaning it's possible to parallelise for fast implementation on processors that support it, think Intel MMX, SSE, etc and GPUs. Introducing modifiable globals would limit vex code to execute serially and in strict order.