FSS Sole Source Justification_RFO_Redacted.pdf

This is a Federal Supply Schedule (FSS) Sole Source Justification (SSJ) document for a high-performance computing cluster procurement above the Simplified Acquisition Threshold (SAT).

The procurement is for the Space Launch Delta 30 (SLD 30) Indirect Funded Compute Cluster under contracting activity 30 CONS/PKB. The agency requires the purchase of one PowerWulf ZXR1+ Cluster (either H4000G1 PN: PWF-ZXR1-H4000G1 or H8000G1 PN: PWF-ZXR1-H8000G1) with MATLAB Compiled Runtime (MCR) for R2026a, Python 3.12 or later installation, and onsite installation support. The system specifications include 816 total AMD EPYC processor cores, 4,352 GB total high-performance ECG system memory, 40TB+ of raw storage space with redundant configuration, 10/100/1000/10000 10 GigE high-performance network backplane, rack and power infrastructure with redundant power configuration, CBeSTCluster Management Toolkit v6.0, Redhat Linux 8.x operating system with one-year subscription license, TPM 2.0 security, ARCTOS verification, TAA compliance, and three-year complete warranty coverage.

The justification cites GSAR 538.7104-3(b)(ii) as the statutory exception, establishing that only one source—PSSC Labs—is capable of providing the required products and services at the necessary quality level because the computing solution must be specifically designed for ARCTOS (formerly ACTA Inc.) application software and fully compatible with existing PSSC Labs-manufactured on-site infrastructure. The document emphasizes that PSSC Labs is the sole ARCTOS-certified solution provider with the mandatory multi-processor mode capability and certified ability to execute RRAT (Range Risk Analysis Tool) software. The contracting officer, SCOTT YEAPLE (30 CONS/PKB), digitally signed the justification on July 9, 2026.