1. A method of acquiring remote shared variable directory (SVD) information in a parallel computer, the parallel computer comprising a plurality of threads of execution, the threads organized into tasks, the parallel computer further comprising memory partitioned to provide each thread with a private memory and a shared memory, the method comprising: determining, by a runtime optimizer of the parallel computer, that a first thread of a first task requires shared resource data stored in a memory partition corresponding to a second thread of a second task; in response to determining that the first thread of the first task requires the shared resource data stored in the memory partition corresponding to the second thread, requesting from the second thread, by the runtime optimizer, SVD information associated with the shared resource data; and receiving from the second thread, by the runtime optimizer, the SVD information associated with the shared resource data.