update gitignore and readme for data/ dir

.gitignore

@@ -43,3 +43,10 @@ tmp_mat*/
 
 # Jupyter notebook checkpoints
 .ipynb_checkpoints/
+
+# Generated formatted tensor files
+tensor_*_mode_*
+
+# Tensor files
+*.mtx
+*.tns

data/README.md

@@ -3,7 +3,7 @@
 Example formatted data for running SAM simulations and Onyx HW
 
 We have committed two example Suitesparse matrices for inspection (both in .mtx format and formatted for SAM). 
-All mtx files can be found in `suitesparse/` and all files formatted for SAM can be found in `suitesparse-formatted`
+All .mtx files can be found in `suitesparse/`, .tns files for the 'other' matrix can be found in `other/`, and all files formatted for SAM can be found in `suitesparse-formatted`
 
 To run SAM on all other suitesparse, follow these steps:
   1. Start from the `sam/` rootdir
@@ -16,6 +16,10 @@ To run SAM on all other suitesparse, follow these steps:
   ./scripts/generate_suitesparse_formats.sh <tensor_name_txt>
   ```
 
+
 # Frostt Data
 
 TODO
+
+# NOTE
+All other \*.mtx, \*.tns, and tensor\_\*\_mode\_\* files are ignored in the .gitignore