Renaud, CBricout, FLepretre, EP. F. Lister and R. L. Grimsdale2014-02-062014-02-061993--https://doi.org/10.2312/EGGH/EGGH93/081-092This paper describes a massively parallel implementation of the progressive radiosityalgorithm. Our algorithm is based on an hemispherical projection approach, which provides an accurate from factor approximation. As the projection plane is mapped onto a processor mesh, we propose different techniques decreasing computation timeby reducing as much as possible processor inactivity. This approach successfully handles large sets of form factor sampling elements.