diff --git a/include/ircd/simd/print.h b/include/ircd/simd/print.h
index 1a2dfe49d..962432707 100644
--- a/include/ircd/simd/print.h
+++ b/include/ircd/simd/print.h
@@ -13,6 +13,8 @@
 
 namespace ircd::simd
 {
+	struct print;
+
 	/// Print the contents of the vector in "register layout" which are
 	/// little-endian hex integer preceded by '0x' with each lane being
 	/// space-separated. The fmt argument is reserved to offer some additional
@@ -44,28 +46,33 @@ namespace ircd::simd
 	          const T,
 	          const uint &fmt = 0)
 	noexcept;
+}
 
-	/// Print the contents of the vector to stdout; developer convenience.
-	/// One of the other functions in this suite must be selected by this
-	/// template to generate the desired string.
+/// Print the contents of the vector to stdout; developer convenience.
+/// One of the other functions in this suite must be selected by this
+/// template to generate the desired string.
+class ircd::simd::print
+{
+	bool output(const mutable_buffer &, const string_view &, const bool lf);
+
+  public:
 	template<class T,
 	         class F = decltype(print_mem<T>)>
-	bool
 	print(const T,
 	      F&& printer      = print_mem<T>,
 	      const uint &fmt  = 0,
 	      const bool &lf   = true);
-}
+};
 
 /// Developer convenience. Reference another print_*() in the template. All
 /// arguments are passed thru.
 template<class T,
          class F>
-inline bool
-ircd::simd::print(const T vec,
-                  F&& printer,
-	              const uint &fmt,
-	              const bool &lf)
+inline
+ircd::simd::print::print(const T vec,
+                         F&& printer,
+                         const uint &fmt,
+                         const bool &lf)
 {
 	thread_local char buf[1024];
 	const string_view str
@@ -73,25 +80,8 @@ ircd::simd::print(const T vec,
 		printer(buf, vec, fmt)
 	};
 
-	const auto term
+	const bool done
 	{
-		std::min(str.size(), sizeof(buf) - 1)
+		output(buf, str, lf)
 	};
-
-	assert(buf[term] == 0x0);
-	buf[term] = lf? '\n': buf[term];
-	const auto len
-	{
-		size(str) + lf
-	};
-
-	size_t wrote {0}, last {0}; do
-	{
-		last = ::fwrite(data(str) + wrote, 1, len - wrote, ::stdout);
-		wrote += last;
-	}
-	while(wrote < len && last > 0); // ensure last!=0 or break for error.
-
-	assert(wrote <= len);
-	return wrote == len;
 }
diff --git a/ircd/simd.cc b/ircd/simd.cc
index cfb70c598..3c8fbfe7d 100644
--- a/ircd/simd.cc
+++ b/ircd/simd.cc
@@ -121,9 +121,37 @@ ircd::simd::u512x1_lane_id
 
 ///////////////////////////////////////////////////////////////////////////////
 //
-// simd/debug.h
+// simd/print.h
 //
 
+bool
+ircd::simd::print::output(const mutable_buffer &buf,
+                          const string_view &str,
+                          const bool lf)
+{
+	const auto term
+	{
+		std::min(str.size(), size(buf) - 1)
+	};
+
+	assert(buf[term] == 0x0);
+	buf[term] = lf? '\n': buf[term];
+	const auto len
+	{
+		size(str) + lf
+	};
+
+	size_t wrote {0}, last {0}; do
+	{
+		last = ::fwrite(data(str) + wrote, 1, len - wrote, ::stdout);
+		wrote += last;
+	}
+	while(wrote < len && last > 0); // ensure last!=0 or break for error.
+
+	assert(wrote <= len);
+	return wrote == len;
+}
+
 //
 // Stringify into native integer (register) hex format value for each lane.
 // Note that each value is prepended with '0x' by convention to indicate an