During memory pressure, print with 4 sig figs

Author: azonenberg

scopehal/AcceleratorBuffer.h

@@ -1329,7 +1329,7 @@ class AcceleratorBuffer
 			LogError(
 				"Failed to allocate %s of GPU memory despite our best efforts to reclaim space\n"
 				"This is unrecoverable (for now).\n",
-				Unit(Unit::UNIT_BYTES).PrettyPrint(req.size).c_str());
+				Unit(Unit::UNIT_BYTES).PrettyPrint(req.size, 4).c_str());
 			exit(1);
 		}
 		m_gpuMemoryType = MEM_TYPE_GPU_ONLY;

scopehal/scopehal.cpp

@@ -1006,7 +1006,7 @@ bool OnMemoryPressure(MemoryPressureLevel level, MemoryPressureType type, size_t
 	LogWarning("OnMemoryPressure: %s memory exhaustion on %s (tried to allocate %s)\n",
 		(level == MemoryPressureLevel::Hard) ? "Hard" : "Soft",
 		(type == MemoryPressureType::Host) ? "host" : "device",
-		Unit(Unit::UNIT_BYTES).PrettyPrint(requestedSize).c_str());
+		Unit(Unit::UNIT_BYTES).PrettyPrint(requestedSize, 4).c_str());
 
 	bool moreFreed = false;