- /*
- * Dimension based routing routes through each dimension consecutively
- * TODO Change to dynamic assignment
- */
- unsigned int j, cur_dim, dim_product = 1;
- unsigned int current_node = src->id();
- unsigned int next_node = 0;
- /*
- * Arrays that hold the coordinates of the current node and
- * the target; comparing the values at the i-th position of
- * both arrays, we can easily assess whether we need to route
- * into this dimension or not.
- */
- unsigned int* myCoords = rankId_to_coords(src->id(), dimensions_);
- unsigned int* targetCoords = rankId_to_coords(dst->id(), dimensions_);
- /*
- * linkOffset describes the offset where the link
- * we want to use is stored
- * (+1 is added because each node has a link from itself to itself,
- * which can only be the case if src->m_id == dst->m_id -- see above
- * for this special case)
- */
- int nodeOffset = (xbt_dynar_length(dimensions_) + 1) * src->id();
-
- int linkOffset = nodeOffset;
- bool use_lnk_up = false; // Is this link of the form "cur -> next" or "next -> cur"?
- // false means: next -> cur
- while (current_node != dst->id()) {
- dim_product = 1; // First, we will route in x-dimension
- for (j = 0; j < xbt_dynar_length(dimensions_); j++) {
- cur_dim = xbt_dynar_get_as(dimensions_, j, int);
-
- // current_node/dim_product = position in current dimension
- if ((current_node / dim_product) % cur_dim != (dst->id() / dim_product) % cur_dim) {
-
- if ((targetCoords[j] > myCoords[j] && targetCoords[j] <= myCoords[j] + cur_dim / 2) // Is the target node on the right, without the wrap-around?
- || (myCoords[j] > cur_dim / 2 && (myCoords[j] + cur_dim / 2) % cur_dim >= targetCoords[j])) { // Or do we need to use the wrap around to reach it?
- if ((current_node / dim_product) % cur_dim == cur_dim - 1)
- next_node = (current_node + dim_product - dim_product * cur_dim);
- else
- next_node = (current_node + dim_product);
-
- // HERE: We use *CURRENT* node for calculation (as opposed to next_node)
- nodeOffset = current_node * (linkCountPerNode_);
- linkOffset = nodeOffset + (hasLoopback_?1:0) + (hasLimiter_?1:0) + j;
- use_lnk_up = true;
- assert(linkOffset >= 0);
- } else { // Route to the left
- if ((current_node / dim_product) % cur_dim == 0)
- next_node = (current_node - dim_product + dim_product * cur_dim);
- else
- next_node = (current_node - dim_product);
-
- // HERE: We use *next* node for calculation (as opposed to current_node!)
- nodeOffset = next_node * (linkCountPerNode_);
- linkOffset = nodeOffset + j + (hasLoopback_?1:0) + (hasLimiter_?1:0) ;
- use_lnk_up = false;
-
- assert(linkOffset >= 0);
- }
- XBT_DEBUG("torus_get_route_and_latency - current_node: %i, next_node: %u, linkOffset is %i",
- current_node, next_node, linkOffset);
-
- break;
- }
-
- dim_product *= cur_dim;
+ /*
+ * Dimension based routing routes through each dimension consecutively
+ * TODO Change to dynamic assignment
+ */
+ unsigned int j, cur_dim, dim_product = 1;
+ unsigned int current_node = src->id();
+ unsigned int next_node = 0;
+ /*
+ * Arrays that hold the coordinates of the current node and
+ * the target; comparing the values at the i-th position of
+ * both arrays, we can easily assess whether we need to route
+ * into this dimension or not.
+ */
+ unsigned int* myCoords = rankId_to_coords(src->id(), dimensions_);
+ unsigned int* targetCoords = rankId_to_coords(dst->id(), dimensions_);
+ /*
+ * linkOffset describes the offset where the link
+ * we want to use is stored
+ * (+1 is added because each node has a link from itself to itself,
+ * which can only be the case if src->m_id == dst->m_id -- see above
+ * for this special case)
+ */
+ int nodeOffset = (xbt_dynar_length(dimensions_) + 1) * src->id();
+
+ int linkOffset = nodeOffset;
+ bool use_lnk_up = false; // Is this link of the form "cur -> next" or "next -> cur"?
+ // false means: next -> cur
+ while (current_node != dst->id()) {
+ dim_product = 1; // First, we will route in x-dimension
+ for (j = 0; j < xbt_dynar_length(dimensions_); j++) {
+ cur_dim = xbt_dynar_get_as(dimensions_, j, int);
+
+ // current_node/dim_product = position in current dimension
+ if ((current_node / dim_product) % cur_dim != (dst->id() / dim_product) % cur_dim) {
+
+ if ((targetCoords[j] > myCoords[j] &&
+ targetCoords[j] <= myCoords[j] + cur_dim / 2) // Is the target node on the right, without the wrap-around?
+ || (myCoords[j] > cur_dim / 2 &&
+ (myCoords[j] + cur_dim / 2) % cur_dim >=
+ targetCoords[j])) { // Or do we need to use the wrap around to reach it?
+ if ((current_node / dim_product) % cur_dim == cur_dim - 1)
+ next_node = (current_node + dim_product - dim_product * cur_dim);
+ else
+ next_node = (current_node + dim_product);
+
+ // HERE: We use *CURRENT* node for calculation (as opposed to next_node)
+ nodeOffset = current_node * (linkCountPerNode_);
+ linkOffset = nodeOffset + (hasLoopback_ ? 1 : 0) + (hasLimiter_ ? 1 : 0) + j;
+ use_lnk_up = true;
+ assert(linkOffset >= 0);
+ } else { // Route to the left
+ if ((current_node / dim_product) % cur_dim == 0)
+ next_node = (current_node - dim_product + dim_product * cur_dim);
+ else
+ next_node = (current_node - dim_product);
+
+ // HERE: We use *next* node for calculation (as opposed to current_node!)
+ nodeOffset = next_node * (linkCountPerNode_);
+ linkOffset = nodeOffset + j + (hasLoopback_ ? 1 : 0) + (hasLimiter_ ? 1 : 0);
+ use_lnk_up = false;
+
+ assert(linkOffset >= 0);