From db9c865dd318dc3fdddeb3ed91412c4e2b7f0a4c Mon Sep 17 00:00:00 2001
From: Andreas Kloeckner <inform@tiker.net>
Date: Mon, 30 Jul 2012 14:50:01 -0400
Subject: [PATCH] Add debug printfs to scan.
---
pyopencl/scan.py | 27 +++++++++++++++++++++++++--
1 file changed, 25 insertions(+), 2 deletions(-)
diff --git a/pyopencl/scan.py b/pyopencl/scan.py
index 91cff1e3..778a1420 100644
--- a/pyopencl/scan.py
+++ b/pyopencl/scan.py
@@ -117,6 +117,13 @@ SCAN_INTERVALS_SOURCE = SHARED_PREAMBLE + r"""//CL//
#define K ${k_group_size}
+// #define DEBUG
+#ifdef DEBUG
+ #define pycl_printf(ARGS) printf ARGS
+#else
+ #define pycl_printf(ARGS) /* */
+#endif
+
KERNEL
REQD_WG_SIZE(WG_SIZE, 1, 1)
void ${name_prefix}_scan_intervals(
@@ -208,6 +215,8 @@ void ${name_prefix}_scan_intervals(
local_barrier();
%endif
+ pycl_printf(("after input_fetch_exprs\n"));
+
// }}}
// {{{ read a unit's worth of data from global
@@ -256,6 +265,8 @@ void ${name_prefix}_scan_intervals(
}
}
+ pycl_printf(("after read from global\n"));
+
// }}}
// {{{ carry in from previous unit, if applicable
@@ -279,6 +290,8 @@ void ${name_prefix}_scan_intervals(
);
}
+ pycl_printf(("after carry-in\n"));
+
// }}}
local_barrier();
@@ -321,6 +334,8 @@ void ${name_prefix}_scan_intervals(
}
}
+ pycl_printf(("after scan along k\n"));
+
// }}}
// store carry in out-of-bounds (padding) array entry (index K) in the K direction
@@ -422,6 +437,8 @@ void ${name_prefix}_scan_intervals(
<% scan_offset *= 2 %>
% endwhile
+ pycl_printf(("after tree scan\n"));
+
// }}}
// {{{ update local values
@@ -459,6 +476,8 @@ void ${name_prefix}_scan_intervals(
}
%endif
+ pycl_printf(("after local update\n"));
+
// }}}
local_barrier();
@@ -473,11 +492,14 @@ void ${name_prefix}_scan_intervals(
if (unit_base + offset < interval_end)
%endif
{
+ pycl_printf(("write: %d\n", unit_base + offset));
partial_scan_buffer[unit_base + offset] =
ldata[offset % K][offset / K];
}
}
+ pycl_printf(("after write\n"));
+
// }}}
local_barrier();
@@ -696,7 +718,7 @@ _PREFIX_WORDS = set("""
is_seg_start update_i scan_item_at_i seq_i read_i
l_ o_mod_k o_div_k l_segment_start_flags scan_value sum
first_seg_start_in_interval g_segment_start_flags
- group_base seg_end my_val
+ group_base seg_end my_val DEBUG ARGS
LID_2 LID_1 LID_0
LDIM_0 LDIM_1 LDIM_2
@@ -706,7 +728,7 @@ _PREFIX_WORDS = set("""
_IGNORED_WORDS = set("""
typedef for endfor if void while endwhile endfor endif else const printf
- None return bool n char true false
+ None return bool n char true false ifdef pycl_printf
set iteritems len setdefault
@@ -738,6 +760,7 @@ _IGNORED_WORDS = set("""
intra Therefore find code assumption
branch workgroup complicated granularity phase remainder than simpler
We smaller look ifs lots self behind allow barriers whole loop
+ after
is_tail is_first_level input_expr argument_signature preamble
double_support neutral output_statement index_type_max
--
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