UHMEM is a cycle-accurate hybrid memory simulator. It models a hybrid memory system consisting of a fast memory component and a slow memory component with separate channels connected to processors. The simulator is described at: Yang Li, Saugata Ghose, Jongmoo Choi, Jin Sun, Hui Wang, Onur Mutlu, "Utility-Based Hybrid Memory Management", in IEEE Cluster Computing Conference (Cluster), 2017.

In order to run UHMEM, we need to install Microsoft Mono package on the system.

We also need to use the Pintools to collect applications' load/store traces, and then cache-filter these traces to get the memory reference traces. These traces should be put in the FilteredTrace folder with a format as follows:

Each line: [number of instructions between last memory reference and this memory reference] [the address of memory read reference] [the address of memory write reference (if there is any)]

To build UHMEM, simply do:

make

To run the UHMEM mechanism proposed in [Li+, Cluster 2017], run the following command:

./pfa.sh

To run the prior RBLA or ALL mechanisms (see [Li+, Cluster 2017], run the following command:

./rbla.sh

./all.sh

The simulation results will be output to pfa.dat, rbla.dat, all.dat files.

Yang Li (Carnegie Mellon University)