run fast

README.md

@@ -106,6 +106,7 @@ the image and runs until the 3142947347th cycle (when above terminates,
 could be earlier), then halts the machine, saving the state of RAM to
 a directory.
 
+
 ```
 cartesi-machine								\
 	--max-mcycle=3142947347						\
@@ -116,6 +117,14 @@ cartesi-machine								\
 	-- /mnt/stockfish/stockfish.sh
 ```
 
+Note, it won't overwrite the the directory, so you may need to delete
+the above directory if you re-run the above command:
+
+```
+# Only run if you re-run above:
+rm -rf cartesi/stockfish-ram
+```
+
 # Load Machine State
 This loads the above machine state and starts it at the begining,
 running until the end. Basically, finishes at the end.
@@ -158,6 +167,37 @@ cartesi-machine								\
 	-- /mnt/stockfish/stockfish.sh
 ```
 
+# Store/Load Machine State 95% Run
+This stores the machine state 95% through normal completion.
+This is like a "fast boot" to the application.
+
+```
+cartesi-machine								\
+	--max-mcycle=2985799980						\
+	--store=cartesi/stockfish-ram-95				\
+	--ram-length=256Mi						\
+	--flash-drive=label:stockfish,filename:cartesi/stockfish.ext2	\
+	--flash-drive=label:root,filename:/opt/cartesi/share/images/rootfs.ext2	\
+	-- /mnt/stockfish/stockfish.sh
+```
+
+
+This loads the above, and should finish relatively fast.
+Doing a full run takes around 3 minutes to get the full test
+output from stockfish. Running below takes 18 seconds to get the the
+identical output. It could be made much faster by finding the exact
+cycle where the output begins.
+
+```
+cartesi-machine								\
+	--load=cartesi/stockfish-ram-95					\
+	--initial-hash							\
+	--final-hash							\
+	--ram-length=256Mi						\
+	--flash-drive=label:stockfish,filename:cartesi/stockfish.ext2	\
+	--flash-drive=label:root,filename:/opt/cartesi/share/images/rootfs.ext2	\
+	-- /mnt/stockfish/stockfish.sh
+```
 
 # TODO