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Execution of charm program starts from main’s constructor
Array: set of objects. Objects invoke methods of other array members asynchronously.
System mediates the comm between objects.
If a3 moves from one pe to another, a0 doesn’t need to know
System has automatic mechanisms that efficiently forward messages when needed
Supports Broadcasts…
Summary of the entities that we came across till now.
Summary of the entities that we came across till now.
The system uses the one pup routine to do both packing and unpacking by passing different types of PUP::ers to it. You can determine what type of PUP::er has been passed to you with the p.isPacking(), p.isUnpacking(), and p.isSizing() methods. The p.isDeleting() method returns true if the pupped object will be deleted after packing.
Interval 48.5s / 41.6s
Jacobi 2048 (dimension) .1 (threshold) 32 chares 4 processors
Each chare waits for the others to complete for starting the next step
2 steps take Approx 500 us
2 steps take approx. 300 us
Sync entry methods are special in that calls to sync entry methods are blocking - they do not return control to the caller until the method is finished executing completely. Sync methods may have return values; however, they may only return messages. Exclusive entry methods, which exist only on node groups, are entry methods that do not execute while other exclusive entry methods of its node group are executing in the same node. If one exclusive method of a node group is executing on node 0, and another one is scheduled to run on that same node, the second exclusive method will wait for the first to finish before it executes. To make an entry method exclusive, add the keyword exclusive to that entry method's attribute list.