Update tensorflow and xprof constraints in collect-profile-requiremen… - #40299
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…ts.txt - Update tensorflow constraint from <3.13 to <3.14 now that 3.13 wheels are available. - Guard xprof with python_version < 3.15 to avoid pulling in cryptography on Python 3.15t where wheels are not yet available.
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**Why?** program_order(enforce=True) traverses the jaxpr and adds opt_barrier of the form `opt_barrier((prev_outs, cur_inputs))`. It does not recurse into HOPs though. One consequence of adding opt_barriers (other than disallowing all kinds of optimizations) is that it also alters the lifetime of some arrays (I'll give an example below). So what `exclude_argnames` on `program_order(enforce=False)` does is it allows us to skip some `cur_inps` from the `opt_barrier((prev_outs, cur_inps))`. This opt_barrier is inserted by an outer program_order(enforce=True), so `enforce=False` is nested. Note that exclude_argnames only works when `enforce=False`. Also, if some arrays are closed over, then those can't be excluded. To exclude, arrays should be inputs and added to `exclude_argnames` (maybe we can support closed over inputs somehow but not today). To make this work, we added a `program_order` primitive but it's very lightweight since it piggybacks on `eval_jaxpr_p`! **Example of opt_barrier altering lifetimes** ``` x, y = opt_barrier((x, y) # Will force both x and y to be ready here! f(x) g(y) ``` Without the opt_barrier: ``` f(x) # x can be ready here g(y) # y can be ready here ``` FUTURE_COPYBARA_INTEGRATE_REVIEW=#40299 from hawkinsp:deps 067ddf0 PiperOrigin-RevId: 972232723
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…nts.txt