memory is our memory profiler as a lot of fairly interesting features. It supports a live mode where you can see what your application is, where your application is spending memory as it's running. The other really cool feature that it's got is the ability to see into a C or rusters C++ extension module. So if you're calling a library that's implemented partly in C, like NumPy, you can see how NumPy is doing its allocations under the hood.