Abstract: A plurality of PCIe switch complexes are interposed between a plurality of I/O devices and a plurality of microprocessor complexes. Each PCIe switching complex comprises a plurality of PCIe switches wherein each switch possesses at least one non-transparent port. The non-transparent port is used to cross-couple each PCIe switch creating an active matrix of paths between the HBAs associated with each I/O device and each microprocessor. The paths between each HBA (I/O device) and each microprocessor are mapped using a recursive algorithm providing each I/O device with direct memory access to each microprocessor.

Abstract: Data buffering allocation in a microprocessor complex for a request of memory allocation is supported through a remote buffer batch allocation protocol. The separation of control and data placement allows simultaneous maximization of microprocessor complex load sharing, and minimization of inter-processor signaling/metadata migration. Separating processing control from data placement allows the location of data buffering to be chosen so as to maximize bus bandwidth utilization and achieve non-blocking switch behavior. This separation reduces the need for inter-processor communication and associated interrupts thus improving computation efficiency and performance.

Abstract: Dual ported Input/Output (“I/O”) routers couple I/O devices to a cross-coupled switching fabric providing multiple levels of data path redundancy. Each I/O router possesses two or more internal ports allowing each I/O router to access multiple switches in a cross-coupled switching fabric. The additional redundant paths between each I/O device and each microprocessor complex provide additional means to balance data traffic and thereby maximize bandwidth utilization. I/O routers can be interleaved with single HBAs establishing access a switching fabric that uses cross-coupled nontransparent ports thus providing each I/O device with multiple paths upon which to pass data. Data paths are identified by a recursive address scheme that uniquely identifies each data path option available to each I/O device.

Abstract: A plurality of PCIe switch complexes are interposed between a plurality of I/O devices and a plurality of microprocessor complexes. Each PCIe switching complex comprises a plurality of PCIe switches wherein each switch possesses at least one non-transparent port. The non-transparent port is used to cross-couple each PCIe switch creating an active matrix of paths between the HBAs associated with each I/O device and each microprocessor. The paths between each HBA (I/O device) and each microprocessor are mapped using a recursive algorithm providing each I/O device with direct memory access to each microprocessor.

Abstract: Data buffering allocation in a microprocessor complex for a request of memory allocation is supported through a remote buffer batch allocation protocol. The separation of control and data placement allows simultaneous maximization of microprocessor complex load sharing, and minimization of inter-processor signaling/metadata migration. Separating processing control from data placement allows the location of data buffering to be chosen so as to maximize bus bandwidth utilization and achieve non-blocking switch behavior. This separation reduces the need for inter-processor communication and associated interrupts thus improving computation efficiency and performance.