A system for providing RDMA, remote direct memory access, read requests as a restricted feature in a high performance computing environment, comprising: one or more microprocessors; and a first subnet, the first subnet comprising a plurality of switches, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one host channel adapter port, and wherein the plurality of host channel adapters are interconnected via the plurality of switches, a plurality of end nodes, including a plurality of virtual machines, wherein each of the plurality of end nodes comprises at least one virtual machine of the plurality of virtual machines; wherein a host channel adapter of the plurality of host channel adapters is associated with a selective RDMA restriction; and wherein one or more virtual machines of the plurality of virtual machines is hosted at the host channel adapter that comprises the selective RDMA restriction, wherein the selective RDMA restriction comprises a trusted end node restriction configured to restrict issuance of RDMA read requests to only those virtual machines hosted on the host channel adapter that are flagged as trusted within the selective RDMA restriction, wherein a trusted virtual machine is a virtual machine that is trusted not to generate excessive RDMA read based ingress bandwidth for responses to the RDMA read requests at the host channel adapter, wherein a virtual machine of the one or more virtual machines hosted at the host channel adapter is flagged as non-trusted within the selective RDMA restriction; wherein the virtual machine of the one or more virtual machines hosted at the host channel adapter initiates a RDMA read request targeted to another of the plurality of end nodes; and wherein based upon the selective RDMA restriction, the host channel adapter prevents the RDMA read request from egressing out of the host channel adapter. one or more microprocessors; and a first subnet, the first subnet comprising a plurality of switches, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one host channel adapter port, and wherein the plurality of host channel adapters are interconnected via the plurality of switches, a plurality of end nodes, including a plurality of virtual machines, wherein each of the plurality of end nodes comprises at least one virtual machine of the plurality of virtual machines; a plurality of switches, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one host channel adapter port, and wherein the plurality of host channel adapters are interconnected via the plurality of switches, a plurality of end nodes, including a plurality of virtual machines, wherein each of the plurality of end nodes comprises at least one virtual machine of the plurality of virtual machines; wherein a host channel adapter of the plurality of host channel adapters is associated with a selective RDMA restriction; and wherein one or more virtual machines of the plurality of virtual machines is hosted at the host channel adapter that comprises the selective RDMA restriction, wherein the selective RDMA restriction comprises a trusted end node restriction configured to restrict issuance of RDMA read requests to only those virtual machines hosted on the host channel adapter that are flagged as trusted within the selective RDMA restriction, wherein a trusted virtual machine is a virtual machine that is trusted not to generate excessive RDMA read based ingress bandwidth for responses to the RDMA read requests at the host channel adapter, wherein a virtual machine of the one or more virtual machines hosted at the host channel adapter is flagged as non-trusted within the selective RDMA restriction; wherein the virtual machine of the one or more virtual machines hosted at the host channel adapter initiates a RDMA read request targeted to another of the plurality of end nodes; and wherein based upon the selective RDMA restriction, the host channel adapter prevents the RDMA read request from egressing out of the host channel adapter.