Hi: "still unclear" means to me. For a computational code, i need allocating "replicated memory" (i.e., the amount of memory for each CPU) and "distributed memory" (i.e., the memory allocated for the node) in a UMA-type computer of four dual-opterons with 24GB physical ram (amd6s lenny). A correct allocation is very stringent, as the procedure checks for needed memory for a given job and does not start if memory is not enough (big matrices to solve).
I know how to set shmmax and shmall through /etc/sysctl.conf and i found so much on internet about setting these parameters for databases, though it is unclear to me how to do at the best in the general context of number crunching in solving matrices, as it occurs with computational codes like, for example, gamess-us. Currently the setting is shmmax=shmall=90% physical memory installed but surely the two parameters should have their proper - and different - setting. Thanks francesco pietra -- To UNSUBSCRIBE, email to debian-amd64-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org