pytc.solver.isdf_xtc_ccsd._x_backing_panel_source¶

pytc.solver.isdf_xtc_ccsd._x_backing_panel_source(x_backing, nocc, layout='innermost')[source]¶

Panel source that reads straight from the X backing (tier 3).

Returns rank-leading (panel, nvir, nvir) panels – the layout the panel kernels consume. Innermost-layout backings are transposed inside the prefetch thread (the copy overlaps the current kernel); rank-major backings already store panels in this exact shape, so a panel read is one contiguous block with no transpose at all.